Calculate the measure of angle X. Round
your answer to the nearest hundredth.
A) 56.25
B)23.45
C)33.75
D)29.05

When oversampling a minority class, the positive rate increases, meaning that the model is more likely to correctly identify instances of that class. Under-sampling the majority class may decrease the false positive rate, as the model is less likely to incorrectly classify instances from the majority class as belonging to the minority class.

This may also decrease the positive rate, as there are fewer examples of the minority class to learn from. In general, both oversampling and under-sampling can have trade-offs and it is important to carefully consider the specific dataset and problem at hand before deciding which approach to use.

Oversampling, in which examples from the minority class are duplicated, can have the following effects:
1. False positive rate: Oversampling may lead to an increase in false positives, as the classifier becomes more sensitive to the minority class, causing it to potentially misclassify some majority class instances as minority class instances.
2. False negative rate: On the other hand, oversampling tends to reduce the false negative rate, since the classifier becomes better at identifying the minority class instances.

Undersampling, in which examples from the majority class are deleted, can have these effects:
1. False positive rate: Undersampling may lead to a decrease in false positives, as the classifier is less likely to misclassify majority class instances as minority class instances due to the reduced majority class representation.
2. False negative rate: However, undersampling can cause an increase in false negatives, as the classifier may not be as sensitive to the minority class instances and may misclassify them as majority class instances.

In summary, oversampling generally increases false positives and reduces false negatives, while undersampling tends to decrease false positives and increase false negatives. When choosing between these methods, it's important to consider the specific problem and the desired balance between false positive and false negative rates.

Learn more about Over-sampling:

brainly.com/question/29490427

#SPJ11

The he dimensions of the box are approximately 7 ft x 7 ft x 10 ft  are

Volume: x² * h = 490 ft³

Surface area: x² + 4 * x * h = 329 ft²

volume equation

substitute this expression for h into the surface area equation:

[tex]x^2 + 4 * x * (490 / x^2) = 329[/tex]

solve for x:

[tex]x^2 + 1960 / x = 329[/tex]

we can multiply both sides by x:

[tex]x^3 + 1960 = 329x[/tex]

This is a cubic equation:

[tex]x^3 - 329x + 1960 = 0[/tex]

The approximate solution for x using cubic equation  is:

x ≈ 7

h = 490 / (7^2)

h = 490 / 49

h = 10

So, the dimensions of the box are approximately 7 ft x 7 ft x 10 ft

Read more on dimensions here:https://brainly.com/question/26740257

#SPJ1

a. The circumference of circle A and B are 131. 88 meters and 175. 84 meters

b. Yes, the the relationship between the radius and circumference the same for all circles. As the radius increases, the circumference also increases

The formula that is used to calculate the circumference of a circle is expressed as;

C = 2πr

It is so such that the parameters of the equation are;

From the information given, we have that;

For circle A

Circumference = 2× 3.14 × 21

Multiply the values

Circumference = 131. 88 meters

For circle B

Circumference = 2× 3.14 × 28

Multiply the values

Circumference = 175. 84 meters

Learn more about circumference at: https://brainly.com/question/14283575

#SPJ1

The calculated list price of the computer is $480

From the question, we have the following parameters that can be used in our computation:

Total price = $513

Sales tax = 6.875%

using the above as a guide, we have the following:

Total price = List price * (1 + tax)

Substitute the known values in the above equation, so, we have the following representation

List price * (1 + 6.875%)  = 513

Evaluate

List price  = 480

Hence, the List price  = 480

Read more about sales tax at

https://brainly.com/question/9437038

#SPJ1

We cannot determine the p-value from the given information. The confidence interval only tells us the range of values that we are 95% confident contains the true population mean weight change.

The p-value would need to be calculated from the sample data and test statistics to determine the statistical significance of the weight loss program's effectiveness.
A consumer group testing the weight change of participants in a weight loss program. They computed a 95% confidence interval of the result (-4.977, -2.177) and you want to know what we can infer about the p-value for the test.
Since the 95% confidence interval does not include 0 (meaning that the weight change is significantly different from no change), we can conclude that the p-value for this test would be less than 0.05.
The p-value for the test would be less than 0.05.

Visit here to learn more about statistics:

brainly.com/question/31538429

#SPJ11

A simple random sample of steel canisters has been taken, and you have the mean wall thickness and standard deviation in millimeters. To determine if it is appropriate to perform a hypothesis test about the population mean, consider the following factors:

1. Randomness: The sample has been taken using a simple random sampling method, which helps ensure that each canister has an equal chance of being selected. This is a crucial factor for conducting a hypothesis test.

2. Sample size: Although the sample size is not mentioned, a large sample size (usually 30 or more) is preferred for hypothesis testing. The larger the sample size, the more accurate the results of the test will be in representing the entire population.

3. Normality: Hypothesis tests about the population mean often rely on the assumption that the data follows a normal distribution. With a large sample size, the Central Limit Theorem suggests that the sampling distribution of the mean will be approximately normally distributed, even if the population itself is not.

4. Known standard deviation: You have the standard deviation for the sample, which is necessary for conducting the hypothesis test.

Given the information provided, it seems appropriate to perform a hypothesis test about the population mean for the wall thickness of steel canisters, provided the sample size is large enough.

Learn more about deviation here:

https://brainly.com/question/29088233

#SPJ11

The probability that the average number of cherries in 36 cherry puffs will be less than 5.5 is approximately 0.997.

(a) The population mean of X is:

E(X) = 4(.2) + 5(.4) + 6(.3) + 7(.1) = 4.9

The population variance of X is:

Var(X) = E(X^2) - [E(X)]^2

= 4^2(.2) + 5^2(.4) + 6^2(.3) + 7^2(.1) - (4.9)^2

= 1.49

(b) Since the distribution is discrete and the sample size is large (n = 36), we can use the Central Limit Theorem to approximate the distribution of the sample mean as normal. Therefore, the mean of the sample mean is equal to the population mean, which is 4.9, and the variance of the sample mean is given by:

Var(X) = Var(X)/n

= 1.49/36

≈ 0.0414

(c) To find the probability that the average number of cherries in 36 cherry puffs will be less than 5.5, we standardize the variable as follows:

Z = (X - μ) / (σ / √n)

where μ = 4.9, σ = √Var(X) = √0.0414 ≈ 0.2035, and X = 5.5

Z = (5.5 - 4.9) / (0.2035 / √36) = 2.95

Using a standard normal distribution table or calculator, the probability that Z is less than 2.95 is approximately 0.997. Therefore, the probability that the average number of cherries in 36 cherry puffs will be less than 5.5 is approximately 0.997.

To learn more about distribution visit:

https://brainly.com/question/29062095

#SPJ11

The correct statement regarding the domain and the range of the exponential function is given as follows:

An exponential function has the definition presented as follows:

[tex]y = ab^x[/tex]

In which the parameters are given as follows:

The function is in the standard format, meaning that the horizontal asymptote is y = 0, and thus the multiplication of a by zero does not change the horizontal asymptote, and the range stays the same.

The domain also remains the same, as an exponential function is defined for all real values.

More can be learned about exponential functions at brainly.com/question/2456547

#SPJ1

The values of angle O in the triangle is 13.1 degrees

From the question, we have the following parameters that can be used in our computation:

o = 2.2 cm, n = 8.6 cm and ∠N=134

Using the law of sine, we have

o/sin(O) = n/sin(N)

substitute the known values in the above equation, so, we have the following representation

2.2/sin(O) = 8.6/sin(134)

So, we have

sin(O) = 2.2 * sin(134)/8.6

Evaluate and talke the arc sin

O = 13.1 degrees

Read more about law of sine at

https://brainly.com/question/4372174

#SPJ1

Answer:

10.6

Step-by-step explanation:

Trust; also im smart so like yeah.

Answer:  A

Step-by-step explanation:

Draw a line going out in 3rd quadrant.

your opposite side from angle is5 using pythagorean

and it's positive because it's in the +5 y direction

so sin x = 5/13

The power series representation for f(x) = 1/(1-x) centered at x=0 is:

1 + x + x^2 + x^3 + ...

To find a power series representation for a function, we can use the formula:

f(x) = ∑(n=0 to infinity) [an(x-a)^n]

where a is the center of the series and an is the coefficient of the (x-a)^n term.

For example, let's find a power series representation for the function f(x) = 1/(1-x) centered at x=0:

Using the formula, we have:

f(x) = ∑(n=0 to infinity) [an(x-0)^n]

To find the coefficients an, we can use the formula for the geometric series:

1/(1-x) = 1 + x + x^2 + x^3 + ...

So, we have:

an = [x^n]/n!

Substituting this into the power series formula, we get:

f(x) = ∑(n=0 to infinity) [(x^n)/(n!)](x-0)^n

Simplifying, we get:

f(x) = ∑(n=0 to infinity) [(x^n)/(n!)]

Therefore, the power series representation for f(x) = 1/(1-x) centered at x=0 is:

1 + x + x^2 + x^3 + ...

Learn more about the Series:

brainly.com/question/15415793

#SPJ11

Based on the given data, it seems that both the polysilicon doping level and anneal temperature can affect the base current.

To visually interpret the data, we can create a scatter plot with the polysilicon doping level on the x-axis and the base current on the y-axis, with different colors or symbols representing the different anneal temperatures. We can also create a similar plot with the anneal temperature on the x-axis and the base current on the y-axis, with different colors or symbols representing the different polysilicon doping levels.

To analyze the model, we can examine the residuals to see if they are randomly distributed around zero, indicating that the model is a good fit for the data. If the residuals show a pattern, it may suggest that the model is not a good fit.

Assuming a linear model, we can estimate the parameters using regression analysis. The model could be of the form:

Base current = β0 + β1(doping level) + β2(anneal temperature) + ε

where β0 is the intercept, β1 is the coefficient for doping level, β2 is the coefficient for anneal temperature, and ε is the error term.

Once we have estimated the parameters, we can plot the response surface to see how the base current changes as a function of both the doping level and annealing temperature. This will give us a better understanding of the relationship between these variables and the response variable.

Learn more about doping here:

https://brainly.com/question/23867172

#SPJ11

The change in Emile's height based on old and new height is 0.9 cm or 9/10 cm.

The change in Emile's height can be calculated using the subtraction. The formula to be used for it is -

Change in height = New height - Old height

Firstly changing the height to fraction.

Old height = [tex]3 \frac{7}{10} [/tex]

Old height = ((10×3)+7)/10

Old height = 37/10 cm

New height = [tex]4 \frac{3}{5} [/tex]

New height = ((5×4)+3)/5

New height = 23/5 cm

Keep the values in formula to find the value of change in height

Change in height = 23/5 - 37/10

Change = 23×2 - 37/10

Change = 46 - 37/10

Change = 0.9 cm

Hence, the change in height is 0.9 cm.

Learn more about fraction -

https://brainly.com/question/17220365

#SPJ4

The complete question is -

In seventh grade, Emile grew

3 7/10cm, and in eighth grade, he grew 4 3/5cm. How much did his height increase during these two years?

The answer should be written as a proper mixed number and should be simplified, if possible

During these two years, Emile's height increased by 0.9 cm or 9/10 cm.

We will calculate the change in Emile's height using Subtraction. The formula that we will use is:

Change in height = Eighth-grade height - Seventh-grade height

Firstly, we will convert the height to a fraction.

Seventh-grade height = ((10×3)+7)/10

Seventh-grade height = 37/10 cm

Now,

Eighth-grade height = ((5×4)+3)/5

Eighth-grade height = 23/5 cm

Now, find the change in height by substituting the values in the formula.

Change in height = Eighth-grade height - seventh-grade height

                             =   23/5 - 37/10

Change in height = 23×2 - 37/10

Change = 46 - 37/10

Change = 0.9 cm

Therefore, the increase in height during these two years is 0.9 cm or 9/10 cm.

To learn more about fractions -

https://brainly.com/question/78672

#SPJ4

The coordinates of the image of the dilation of the quadrilateral MNOP are;

M = (0, 4)       M' = (0, 3)

N = (1, 2)        N' = (2, -1)

O = (0, 0)       O' = (0, -5)

P = (-1, 2)        P' = (-2, -1)

The drawing of the figure with the vertices labeled, created with MS Excel is attached

A dilation transformation is one in which a geometric figure is resized to become smaller or larger.

The coordinates of the dilation of a point about the point (0, 5) can be found by first translating the quadrilateral MNOP with regards to the point (0, 5), such that the center is located at the origin as follows;

The coordinates of MNOP are; M(0, 4), N(1, 2), O(0, 0), and P(-1, 2)

The  coordinates of the image following the translation are;

M' = M - (0, 5) = (0, -1)

N' = N - (0, 5) = (1, -3)

O' = O - (0, 5) = (0, -5)

P' = P - (0, 5) = (-1, -3)

The translated points are then dilated as follows;

The coordinates of the image following the dilation are;

M'' = 2 × M' = (0, -2)

N'' = 2 × N' = (2, -6)

O'' = 2 × O' = (0, -10

P'' = 2 × P' = (-2, -6)

The above image are translated to their initial position to get;

M''' = M'' + (0, 5) = (0, 3)

N''' = N'' + (0, 5) = (2, -1)

O''' = O'' + (0, 5) = (0, -5)

P''' = P'' + (0, 5) = (-2, -1)

Please find attached the diagram of the dilated image created with MS Excel

Learn more on dilation transformation here: https://brainly.com/question/29449871

#SPJ1

The probability is 9/10.

Sample Space: {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}

Successful Outcomes:

Numbers greater than 2: {3, 4, 5, 6, 7, 8, 9, 10}

Odd numbers: {1, 3, 5, 7, 9}

However, the numbers 3, 5, 7, and 9 are included in both the "greater than 2" and "odd numbers" sets. So, we only count them once in our combined set of successful outcomes.

Combined Successful Outcomes: {1, 3, 4, 5, 6, 7, 8, 9, 10}

There are a total of 9 successful outcomes out of the 10 possible outcomes in the sample space.

The probability that the number will be more than 2 or odd is:

Probability = (Number of successful outcomes) / (Total number of outcomes) = 9 / 10

So, the probability is 9/10.

Read more on probability here:https://brainly.com/question/24756209

#SPJ1

To determine which vitamin leads to weight gain, a hypothesis test can be conducted using SPSS with a level of significance of 5%. The group with the significantly higher mean weight gain would indicate which vitamin leads to weight gain.

To determine which vitamin leads to weight gain at a level of significance of 5%, a hypothesis test needs to be conducted. The null hypothesis would be that there is no significant difference in weight gain between the three groups, and the alternative hypothesis would be that there is a significant difference.

To conduct the test in SPSS, the first step would be to input the data for each group and calculate the mean weight gain for each group. Then, a one-way ANOVA test can be conducted to determine if there is a significant difference between the means. The level of significance is set at 5%.

If the p-value is less than 0.05, the null hypothesis can be rejected, indicating that there is a significant difference between the means. Further post-hoc tests can then be conducted to determine which specific groups differ significantly.

In conclusion, to determine which vitamin leads to weight gain, a hypothesis test can be conducted using SPSS with a level of significance of 5%. The group with the significantly higher mean weight gain would indicate which vitamin leads to weight gain.

To determine which vitamin leads to weight gain in the specific population, you can perform an analysis using SPSS at a 5% level of significance. First, input the weight gain data for the three vitamin groups into SPSS. Then, conduct an ANOVA (Analysis of Variance) test to compare the means of the three groups. If the p-value obtained from the test is less than the level of significance (0.05), it indicates a significant difference between the groups. Further post-hoc tests (such as Tukey's HSD) can then be conducted to identify which vitamin group leads to a significant weight gain compared to the others.

Learn more about p-value at: brainly.com/question/30461126

#SPJ11

Answer:

3x - 15 + 5x + 9 = 180

8x - 6 = 180

8x = 186

x = 23.25

So angle ABC measures 3(23.25) - 15 = 54.75°, and angle LMN measures

5(23.25) + 9 = 125.25°.

B is correct.

In order to determine if the golf instructional expert's claim is accurate, the LPGA would need to analyze the data collected from the random sample of 45 students.

Based on the given information, the new golf instructional expert claims that her students can hit their drivers an average of 300 yards. However, the LPGA is skeptical about this claim and believes that the students actually hit the ball less than that. To test this hypothesis, the LPGA took a random sample of 45 of her students.

By taking a random sample, the LPGA can estimate the average driving distance of all of the expert's students. If the sample's average is significantly less than 300 yards, then the LPGA's hypothesis would be supported. On the other hand, if the sample's average is close to 300 yards, then the new golf instructional expert's claim would be supported.

It is important to note that the average driving distance of a random sample may not necessarily represent the average driving distance of all of the expert's students. However, taking a random sample is a reliable way to estimate the population's average with a certain level of confidence.

To address your question, let's break it down into steps:

1. A golf instructional expert claims that her students can hit their drivers an average of 300 yards.
2. The LPGA believes this claim is inaccurate and thinks the students' actual average distance is less than 300 yards.
3. To test the claim, the LPGA takes a random sample of 45 students from the golf instructional expert's students.

In order to determine if the golf instructional expert's claim is accurate, the LPGA would need to analyze the data collected from the random sample of 45 students. They would calculate the average distance these students can hit their drivers and compare it to the claimed 300-yard average. If the actual average distance is significantly less than 300 yards, the LPGA would have evidence to dispute the golf instructional expert's claim.

Learn more about random sample at: brainly.com/question/31523301

#SPJ11

Complete Question:

A new golf instructional expert is on the scene. She claims that her students can hit their drivers an average of 300 yards. The LPGA does not think that this is accurate and that the students actually hit the ball less than that. The LPGA took a random sample of 45 of her students. Assume an error level of 5%. What is the null hypothesis?

Answer:

p = 12

Step-by-step explanation:

Make p an independent variable. First, combine like terms.

3/2p+3=21

Multiply everything by 2.

3p+6=42

Subtract 6 from both sides.

3p=42-6

3p=36

Divide both sides by 3.

p=36/3

p=12

The -scores that bound the middle of the area under the standard normal curve are -0.99 and 0.99.

To find the -scores that bound the middle of the area under the standard normal curve, we can use the normalcy function on the TI-84 Plus calculator.

1. Press the "2nd" button, then the "Vars" button (which is the "DISTR" button).

2. Scroll down to "2:normalcdf(", and press "Enter".

3. Type "-99", ",99", "0", and "1" (without quotes), and press "Enter" after each number.

4. The calculator will display the area under the standard normal curve between -99 and 99, which is 1.00 (since the standard normal curve is infinite and covers the entire -infinity to infinity range).

5. To find the -scores that bound the middle of the area, we need to find the -scores that bound the area between -1 and 1, which is approximately 0.68 (or 68% of the total area).

6. Press the "2nd" button, then the "Vars" button (which is the "DISTR" button) again.

7. Scroll down to "3:invNorm(", and press "Enter".  

8. Type "0.16", "0.84", "0", and "1" (without quotes), and press "Enter" after each number.

9. The calculator will display the -scores that bound the middle 68% of the area under the standard normal curve, which are approximately -0.99 and 0.99 (rounded to two decimal places and in ascending order).

Therefore, the -scores that bound the middle of the area under the standard normal curve are -0.99 and 0.99.

Visit here to learn more about the standard normal curve:

brainly.com/question/28971164

#SPJ11

The probability of randomly NOT selecting a gear made by supplier B is 40%.

There are a total of 500 gears in the storage container, with 300 of them made by supplier B. The probability of randomly selecting a gear made by supplier B is therefore 300/500, or 60%.

The probability of NOT selecting a gear made by supplier B is 1 minus the probability of selecting a gear made by supplier B. So, the probability of randomly NOT selecting a gear made by supplier B is 1 - 0.6, or 0.4.

Therefore, the answer is 40%.

To find the probability of NOT selecting a gear made by supplier B, follow these steps:

1. Determine the total number of gears: There are 200 gears from supplier A and 300 gears from supplier B, so there are a total of 200 + 300 = 500 gears in the storage container.

2. Calculate the proportion of gears made by supplier A: Since there are 200 gears from supplier A out of a total of 500 gears, the proportion is 200/500.

3. Convert the proportion to a percentage: (200/500) * 100 = 40%

Learn more about probability at: brainly.com/question/30034780

#SPJ11

First models could be used to find the distance, in miles, run by each of the 3 runners.

We have,

A relay race with a total distance of 1/2 mile is run by a team of 3 runners.

So, Distance Covered by each runner is

= (1/3) (1/2)  

= 1/16

So, (1/2) x (1/3) = 1/6

(1/2) ÷ 3 = 1/6

So, the correct model  1/2 mile is divided in 3 equal parts are the correct options.

Learn more about Fraction here:

brainly.in/question/5451929

#SPJ1

The first four ordered pairs using both sequences are (4, 14), (8, 9), (10, 20), and (11, 15).

To find the ordered pairs using both rules, we simply apply both rules to each starting value.

Starting with 4:
- Applying the first rule gives us 8, which we then apply the second rule to and get 14. So the first ordered pair is (4, 14).
- Applying the second rule first gives us 6, which we then apply the first rule to and get 9. So the second ordered pair is (8, 9).

Starting with 10:
- Applying the first rule gives us 11, which we then apply the second rule to and get 20. So the third ordered pair is (10, 20).
- Applying the second rule first gives us 18, which we then apply the first rule to and get 15. So the fourth ordered pair is (11, 15).

Therefore, the first four ordered pairs using both sequences are (4, 14), (8, 9), (10, 20), and (11, 15).

Know more about sequences here:

https://brainly.com/question/7882626

#SPJ11

The surface area of the larger prism is 104 square inches

From the question, we have the following parameters that can be used in our computation:

The surface area is then calculated as

Area = 2(lw + wh + lh)

Where:

By substitution, we have the following equation

Area = 2 * (2 * 2 + 2 * 12 + 12 * 2)

Evaluate the sum and the products

Area = 104

Hence, the surface area is 104 square inches

Read more about surface area at

https://brainly.com/question/76387

#SPJ1

The area of the diagram ABDC is 625cm2.

We are given that;

RQ is parallel to ST, which implies that ∆PRQ and ∆PST are similar by the AA criterion (angle-angle). We are also given that ST = 4 cm, RP = 10 cm, and PT = 5 cm;

Now,

we can use the fact that RP = 10 cm and PT = 5 cm to find PQ by using the Pythagorean theorem. PQ is the hypotenuse of the right triangle PRT, so we get:

PQ2 = RP2 + PT2 PQ2 = 102 + 52 PQ2 = 100 + 25 PQ2 = 125 PQ = √125 PQ ≈ 11.18 cm

Now we can use PQ and ST as corresponding sides to find the scale factor. We get:

Scale factor = PQ / ST Scale factor ≈ 11.18 / 4 Scale factor ≈ 2.795

ii. To find |RQ|, we can use the scale factor and multiply it by |ST|. We get:

|RQ| = Scale factor * |ST| |RQ| ≈ 2.795 * 4 |RQ| ≈ 11.18 cm

b. Find the area of ∆PST if the area of ∆PRQ is 80 cm2.

To find the area of ∆PST, we can use the fact that the ratio of the areas of similar triangles is equal to the square of the scale factor. We get:

Area of ∆PST / Area of ∆PRQ = (Scale factor)2 Area of ∆PST / 80 = (2.795)2 Area of ∆PST / 80 = 7.812 Area of ∆PST = 7.812 * 80 Area of ∆PST ≈ 625 cm2

Therefore, by the area the answer will be 625cm2.

Learn more about the area;

https://brainly.com/question/1658516

#SPJ1

(a) The sampling distribution of x is approximately normal with mean 82 and standard deviation 3. (b) P(x > 87.4) = 0.0708. (c) P(x ≤ 75.1) = 0.0990. (d) P(79.3 < x < 84.7) = 0.1675.

(a) The sampling distribution of x is approximately normal due to the central limit theorem, with a mean of μ = 82 and a standard deviation of σ/sqrt(n) = 27/sqrt(81) = 3.
(b) To find P(x > 87.4), we first standardize the value using the formula z = (x - μ) / (σ / sqrt(n)) = (87.4 - 82) / (27 / sqrt(81)) = 1.48. We then find the probability using a standard normal distribution table or calculator, which is approximately 0.0708 or 7.08%.
(c) To find P(x ≤ 75.1), we again standardize the value using the formula z = (x - μ) / (σ / sqrt(n)) = (75.1 - 82) / (27 / sqrt(81)) = -1.29. We then find the probability using a standard normal distribution table or calculator, which is approximately 0.0990 or 9.90%.
(d) To find P(79.3), we first standardize the value using the formula z = (x - μ) / (σ / sqrt(n)) = (79.3 - 82) / (27 / sqrt(81)) = -0.96. We then find the probability using a standard normal distribution table or calculator, which is approximately 0.1675 or 16.75%.

Learn more about standard normal distribution here:

https://brainly.com/question/31379967

#SPJ11

The correct option is the first one:

The theoretical probability, P(gold), is 25%, and the experimental probability is 27.5%.

The experimental probability is equal to the quotient between the number of times that a gold block was taken and the total number of trials, so it is:

E = 11/40 = 0.275

Multiply this by 100% to get the percentage:

0.275*100% = 27.5%

For the theoretical probability, take the quotient between the number of gold blocks and the total number:

T = 10/40 = 0.25

And multiply it by 100%

100%*0.25 = 25%

Then the correct option is The theoretical probability, P(gold), is 25%, and the experimental probability is 27.5%.

Learn more about probability at:

https://brainly.com/question/25870256

#SPJ1

The required decrease in dollars was $1222 and the amount of money in Bob's account at the end of last year was $3978.

To find the decrease in dollars and the amount of money in Bob's account at the end of last year, we can use the following steps:

Calculate the amount of the decrease. We can do this by multiplying the original amount by the percentage decrease as a decimal:

Decrease = 0.235 x $5200 = $1222

So, the decrease in dollars is $1222.

Calculate the amount of money in Bob's account at the end of last year. We can do this by subtracting the decrease from the original amount:

Amount at end of last year = $5200 - $1222 = $3978

So, the amount of money in Bob's account at the end of last year was $3978.

Learn more about percentages here;

https://brainly.com/question/29306119

#SPJ1