Professor Very Busy needs to allocate time next week to include time for office hours. He needs to forecast the number of students who will seek appointments. He has gathered the following data:
Week #Students
6 Weeks ago 83
5 Weeks ago 110
4 Weeks ago 95
3 Weeks ago 80
2 Weeks ago 65
Last Year 50
What is this week's forecast using the naive approach? Assume that a decreasing trend in student appointments exists.
Other than the original data point 6 weeks ago, there is a clear trend over the last 5 weeks with continuously decreasing demand, so this week's forecast is last week's demand plus the difference between last week's demand and the demand two weeks ago. 50 + (50 - 65) = 35

here are some screen shots hope it helps

The type of sampling method that the manager used is called; Simple random sampling

There are different methods of sampling used in statistics and they are;

1. Simple random sampling

2. Systematic sampling

3. Stratified sampling

4. Cluster sampling

5. Convenience sampling.

Now, we are told that the manager uses the computer to randomly select 250 students to survey. This type of sampling method is known as simple random sampling because every single student of that school is chosen randomly, merely by chance. Each student has the same probability of being chosen to be a part of a sample.

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Option d). Making the initial determination for all the information requires protection among the unauthorized disclosure where the interest of security is not a derivative classification.

Derivative Classification is the incorporating, paraphrasing, restating, or producing in new shape data this is already categorized, and staining the newly evolved fabric constant with the class markings that practice to the supply data. Copying or duplicating present categorized data, which includes photocopying a document, isn't by-product class.

Derivative classifiers are accountable for preserving the safety and integrity of categorized data. These people should own information concerning the difficulty count number of the categorized data, in addition to class control and staining techniques. Typically, there are 4 classifications for data: public, internal-only, confidential, and restricted. Let's study examples for every of those.

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Correct Question:

All of the following are steps in derivative classification EXCEPT:

a). Seek additional guidance to resolve uncertainty

b). Analyze material to be classified

c). Use authorized sources for guidance

d). Make recommendations for others to mark the new document

The probability that an endure all battery selected at random will last more than 610 hours is 0.3%

What is the Z score?

A Z-score is a metric that quantifies how closely a value relates to the mean of a set of values. Standard deviations from the mean are used to measure Z-score. If a Z-score is 0, it indicates that the data point's score is identical to the mean score.

Z score is used to determine by how many standard deviations the raw score is above or below the mean, The z score is given by:

[tex]z = \frac{x - \mu}{\sigma}[/tex]

where,

x = raw score

μ = mean

σ = standard deviation

Given that μ = 500, σ = 40, for x > 610:

z = (610 - 500) / 40

= 2.75

From the normal distribution table, P(z > 2.75) = 1 - P(z < 2.75) = 1 - 0.9970 = 0.0030 = 0.3%

Hence, the probability that an endure all battery selected at random will last more than 610 hours is 0.3%

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The width of the river is 1700m

What is the time, distance & speed relation?

Speed is calculated by dividing the distance traveled by the amount of time it took to get there. Divide the distance by the speed to find the passing time. To get the distance, multiply the speed by time.

Let 'x' be the distance from THE far bank where 700 is the distance to the NEAR bank

boat one has travelled 700 (rate = 700/unit time) boat two has travelled   x rate = x / unit time

boat one then travels   x  + 400  more      and boat two travels   700 + (700+x -400) more    when they meet

The time is the same:    

rate x time = distance  

distance/rate = time    

equate the distances divided by the respective rates

(700 + x + 400)/700     =    (  x  +  700     +  (700+x-400) )/x

1100x + x^2 = 1400x + 700000

x^2 - 300x - 700000 = 0                        

quadratic formula yields  x = 1000  

One boat travels 700 the other 1000 when they first meet.....width of the river =   700+ 1000 = 1700 m

Hence, the width of the river is 1700m

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Answer:

Step-by-step explanation:

6.3kg = 6300 g

450 * 14 = 6300

20 minutes for 450 g

so, 20 *14 = 280 minutes

Answer:

280 minutes

Step-by-step explanation:

To roast a turkey that weighs 6.3 kg, it will take 20 minutes for every 450 g of turkey, or a total of 20 minutes * (6.3 kg / 0.45 kg/450 g) = 280 minutes.

The probability that an Endure All battery selected at random will last more than 610 hours is 0.1056.

What is a normal distribution?

A data collection with a normal distribution is put up so that the majority of the values cluster in the middle of the range and the remaining values taper off symmetrically in either direction.

Here, we have

Normally distributed with a mean of 500 hours and a standard deviation of 40 hours.

We have to calculate the probability that an endure all battery selected at random will last more than 550 hours.

Given that μ = 500, σ = 40, for x > 550

z = 550-500/40

z = 1.25

From the normal distribution table, P(z > 1.25) = 1 - P(z < 1.25) = 1 - 0.8944 = 0.1056

Hence, The probability that an Endure All battery selected at random will last more than 610 hours is 0.1056.

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Answer: $13,000

Step-by-step explanation:

The error that Vera made is she used the wrong number in her inequality to claimed the solution set on the number line represents the inequality.

In mathematics, "inequality" refers to a connection between two expressions or values that are not equal to one another. The equation-like form of the formula 5x 4 > 2x + 3 has an arrowhead in lieu of the equals sign. It is an illustration of inequity. This shows that the left half, 5x 4, is bigger than the right part, 2x + 3. Finding the x numbers for which the inequality holds true is what we are most interested in. An inequality in mathematics is a relation that compares two numbers or other mathematical expressions in an unequal way. The majority of the time, size comparisons between two numbers on the number line are made.

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The point on the line is (-4, 3) and the slope of the line is m=3

Divide the "vertical change" by the "horizontal change" between (any) two distinct points on the line to find the slope.

The slope's absolute value is used to calculate the steepness, incline, or grade of a line. A line's direction can be increasing, decreasing, horizontal, or vertical.

If a line runs up from left to right, it is growing. The slope is positive, implying that m>0.

If a line falls from left to right, it is diminishing. m<0 is the slope.

A horizontal line has a slope of zero. This is a function that never changes.

Given,

y=3+3(x+4)

y-3=3(x-(-4))

Here, the point on the line is (-4, 3)

And the slope of the line is m=3

Hence, the point on the line is (-4, 3) and the slope of the line is m=3

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When data from k populations are utilized in an analysis of variance, the mean square between treatments (MSTR) = (C) SSTR/(k - 1).

A statistical method called analysis of variance (ANOVA) is used to examine variations in response variables (continuous random variables) evaluated under settings with discrete factors (classification variables, often with nominal levels).

Analysis of Variance is referred to as ANOVA.

Ronald Fisher created a statistical test in 1918, and it has been in use ever since.

Simply put, an ANOVA analysis determines if the means of three or more independent groups differ statistically.

The mean square between treatments (MSTR) equals SSTR/ when samples from k populations are used in an analysis of variance (k - 1).

Therefore, when data from k populations are utilized in an analysis of variance, the mean square between treatments (MSTR) = (C) SSTR/(k - 1).

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Correct question:
When an analysis of variance is performed on samples drawn from k populations, the mean square between treatments (MSTR) is _____.

a. sstr/k

b. sstr/nt

c. sstr/(k – 1)

d. sstr/(nt – 1)

Answer:

[tex]\huge\boxed{\sf 60}[/tex]

Step-by-step explanation:

30 = a × 60

Divide both sides by 60

30/60 = a

0.5 = a

Now,

= 30/0.5

[tex]\rule[225]{225}{2}[/tex]

The number of each type of ticket is sold is D. 90 adult tickets and 30 children's tickets

From the information given, an adult ticket for a magic show costs $18. A children's ticket for the magic show costs $12.

The number of adult tickets sold is 3 times the number of children's tickets sold. A total of $1980 is taken in for ticket sales.

Let the number of children tickets = x

Number of adults ticket = 3x

Therefore, this will be illustrated as:

18(3x) + 12(x) = 1980

54x + 12x = 1980

66x = 1980

Divide

x = 1980 / 66

x = 30.

Children ticket = 30

Adult tickets = 30 × 3 = 90

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If the partial derivative is equal to zero for all values of x then it indicates that the function is constant.

What is a partial derivative?

In differential calculus, partial derivative is defined as the rate of change of multivariable functions concerning change in just one of its variables.

Consider the restriction of f to a line y=c,

then

[tex] \frac{∂f}{∂x}(x \: c) = fx(f \: c) = 0[/tex]

Pick 2 points a and b, then by mean value theorem there is x0, such that

[tex]fx(x \: c) = \frac{f(b \: c) - f(a \: c)}{b - a} = 0[/tex]

[tex]⟹f(b \: c) - f( \: a \: c) = 0⟹f(b \: c) = f(a \: c)⟹f(x \: c) = const.[/tex]

We can show the same way that f(c,y)=const.

Combining f(x,c)=const and f(c,y)=const to get f(x, y)=const.

Hence, If the partial derivative is equal to zero for all values of x then it indicates that the function is constant.

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Answer:

70.8

Step-by-step explanation:

70.782     round the bold 7   to 8   because the number that follows it is >=5

70.8

The value of MB equal x which is equal to 50.6 as the two triangles are similar triangles.

Based on the given information, MNP has a segment AB which is parallel to NP. As AB and NP are parallel and MN is transverse. Therefore, ∠MAB ≅ ∠MNP.  According to Angle – Angle property of similarity, triangle MNP and triangle MAB are similar triangle. If two pairs of corresponding angles are congruent in two triangles, then the triangles are similar. The corresponding sides of similar triangles will be in the same ratio. Hence,

MA/MN = MB/MP

MA = MN – AN = 46.2 – 14 = 32.2

Hence,

32.2/46.2 = x/72.6

x = 50.6

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Postoptimality analysis is another name for sensitivity analysis

What is sensitivity analysis?

According to a certain set of supposition, sensitivity analysis evaluates how various values of an independent variable affect a specific dependent variable. In other words, sensitivity studies look at how different types of uncertainty in a mathematical model affect the overall level of uncertainty in the model. This method is used within boundaries that are preset and depend on one or more input variables.

Both the corporate sector and the study of economics employ sensitivity analysis. It is often referred to as a what-if study and is frequently utilized by economists and financial experts.

Therefore, Postoptimality analysis is another name for sensitivity

analysis and thus option B is the correct answer

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Twenty eight sixths is less than the square root of 26 which is  [tex]\sqrt[6]{28}[/tex] < [tex]\sqrt{26}[/tex]

Square root of a number is a value, which on multiplication by itself, gives the original number. The square root is an inverse method of squaring a number. Hence, squares and square roots are related concepts.

checking for square root of:

 [tex]\sqrt[6]{28}[/tex]    = 1.74

[tex]\sqrt{26}[/tex] = 5.09

which means 1.74 < 5.09

Therefore   [tex]\sqrt[6]{28}[/tex]  < [tex]\sqrt{26}[/tex]

In conclusion twenty eight sixths is less than the square root of 26 (   [tex]\sqrt[6]{28}[/tex]  < [tex]\sqrt{26}[/tex])

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Wolves absence would lead the rabbit population to become stable at 5,000.

Step 1. Concept

If there is a missing variable that should be in the system, set that particular variable to zero and make the necessary conclusion.

Step 2. Given,

dR/dt = 0.08R(1 - 0.00032R) - 0.001RW

dW/dt = −0.02W + 0.00002RW

Step 3. Calculation

The transformed equations of populations of rabbit and wolves will be

dR/dt = 0.08R(1 - 000.2R) - 0.001RW

dW/dt = −0.02W + 0.00002RW

Let's check the rabbit population in the absence of wolves(W) to 0

Thus,

Differential equation dR/dt

dR/dt = 0.08R(1 - 000.2R) - 0.001RW

Take W to equal to O

dR/dt = 0.08R(1 - 000.2R) - 0.001R(0)

dR/dt = 0.08R(1 - 000.2R)

When,

dR/dt = 0 we have R = 0 or R = 5,000

This,

R = 5,000 becomes the equilibrium point in the absence of wolves

Then,

0 < R < 5,000, dR/dt > 0

For R, let's estimate a value rise of the rabbit population to 5,000

Then,

R > 5,000, dR/dt < 0

Judging from the value if R, we infer a deduction in the rabbit population by 5,000

Thus,

We can conclude that wolves absence would lead the rabbit population to become stable at 5,000.

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The possibile base and height of second triangle is option 4: 16 and 6.

We are given the height and base are inversely proportional for the triangle. Based on this, the area of triangle is given by the formula -

Area = 1/2 × base × height

Keep the values in formula to find the area of first triangle -

Area = 1/2 × 12 × 8

Area = 6 × 8

Area = 48

Now, option a in the choices is incorrect, because there is no variation seen in the two values. Trying the other three options to find the dimensions of same area.

Option 2: 60 and 36

Area = 1/2 × 60 × 36

Area = 30 × 36

Area = 1080

Option 3: 120 and 80

Area = 1/2 × 120 × 80

Area = 60 × 80

Area = 4800

Options 4: 16 and 6

Area = 1/2 × 16 × 6

Area = 8 × 6

Area = 48

Hence, option 4 16 and 6 are correct base and height.

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The complete question is attached in the figure.

The maximum error in the calculated area of the disk is 33.93 square cm. The relative error is 0.0148. The percentage error is 1.48%.

a. The area [tex]$\mathrm{A}$[/tex] of a circle with radius [tex]$\mathrm{r}$[/tex] is given by the following formula from Geometry:

[tex]$A=\pi r^2$[/tex]

The question provides us the following information:

radius [tex]$r=27 \mathrm{~cm}$[/tex], maximum radius measurement error [tex]$\Delta r=0.2 \mathrm{~cm}$[/tex]

Using linear differentials we get the error in the calculation of the area of this disk [tex]$\Delta A$[/tex] from (1) as follows:

[tex]$\Delta A=2 \pi r \Delta r \Longrightarrow|\Delta A|=2 \pi r|\Delta r|$[/tex]

Using the information from (2) in (3) yields

[tex]$|\Delta A|=2 \pi(27)(0.2)=33.93 \mathrm{~cm}^2 \text {. }$$[/tex]

The maximum error in the calculated area of the disk is 33.93 square [tex]$\mathrm{cm}$[/tex].

b. The relative error is calculated using (1) and [tex]$r=27 \mathrm{~cm}$[/tex] as follows:

Relative Error [tex]$=\frac{|\Delta A|}{A}=\frac{33.93}{\pi\left(27^2\right)}=0.0148$[/tex].

The relative error is 0.0148.

c. The percentage error is the relative error in part b. above multiplied by [tex]$100 \%$[/tex] to give us

Percentage Error [tex]$=100 \% \times$[/tex] Relative Error [tex]$=100 \% \times 0.0148=1.48 \%$[/tex].

The percentage error is [tex]$1.48 \%$[/tex].

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The given statements can be expressed as

a) [tex]$p \land q$[/tex].

b) [tex]$p \land\neg q$[/tex]

c) [tex]$\neg(p \lor q)$[/tex]

d) [tex]$p \land (q \lor r)$[/tex]

e) [tex]$r \land (p \lor q)$[/tex]

f)   [tex]$r \land (p \land \neg q)$[/tex]

What is a logical expression?

A statement that can be true or false is referred to as a logical expression Depending on the values of p and q, it can be true or false. This is distinct from a mathematical expression, which represents a true statement.

The given statements are

p: it is windy.

q: it is cold.

r: it is raining.

Now

a) it is windy and cold

   This statement can be expressed as - [tex]$p \land q$[/tex].

(b) it is windy but not cold.

     This statement can be expressed as - [tex]$p \land\neg q$[/tex]

(c) it is not true that it is windy or cold. - [tex]$\neg(p \lor q)$[/tex]

(d) it is raining and it is windy or cold.  - [tex]$p \land (q \lor r)$[/tex]

(e) it is raining and windy or it is cold. [tex]$r \land (p \lor q)$[/tex]

(f) it is raining and windy but it is not cold. [tex]$r \land (p \land \neg q)$[/tex]

Hence, the given statements can be expressed as

a) [tex]$p \land q$[/tex].

b) [tex]$p \land\neg q$[/tex]

c) [tex]$\neg(p \lor q)$[/tex]

d) [tex]$p \land (q \lor r)$[/tex]

e) [tex]$r \land (p \lor q)$[/tex]

f)    [tex]$r \land (p \land \neg q)$[/tex]

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Answer: four less than three times a number

Step-by-step explanation:

4 - 3x

x beside a number is times a number so example 4 - ( 3 multiply X)

sorry if it doesnt make sense  

Answer:

yo

Step-by-step explanation:

the person above is right

um did it on edge

Answer:

Step-by-step explanation:

x 3.2 is the answer maybe

The end behavior of the function is described by the following option:

f(x) -> 0 when x -> -∞ and f(x) -> -∞ when x -> ∞.

The end behavior of a function is given by the limits of the function as x goes to infinity.

On the graph, these limits are found looking at the behavior at the left end and at the right end of the graph, as follows:

From the graph, these limits are given as follows:

Hence the correct statement is given by the third option, as the other options give the wrong limits.

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0.8 is greater than 0.3 an image is attached to show the plotting on the number line.

A number line is a one-dimensional horizontal line where we can represent any real number. The origin of the number line is represented by zero left to it are all negative real numbers and right to it are all positive real numbers.

Given, are two decimals 0.3 and 0.8.

We know 0.3 lies between 0 and 0.5 and 0.8 lies between 0.5 and 1.

∴ 0.8 > 0.3.

The plotting of the numbers is attached in the image.

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Answer:

x = 4

Step-by-step explanation:

Look what the attachment

x=4

Step-by-step explanation:

2x-2+5=x+7

2x+3=x+7

2x-x=7-3

x=4

The correct option is tabular

An interactive way to quickly summarize large amounts of data is with a pivot table. A Pivot Table can be used to thoroughly analyze numerical data and provide unexpected answers about your data. Querying vast amounts of data in a variety of user-friendly ways is one task that a pivot table is especially useful.

Data are easily summarized in pivot tables. Pivot tables can be a huge help if you're looking for a quicker and easier way to summarize data. It will help any user create a brief summary from a large amount of disorganized data that is arranged in rows and columns.

From the above information

we can understand that

out of the 4 options

the PivotTable layouts displays all fields in separate columns and subtotal rows at the bottom of each group, similar to a table

is Tabular

hence the solution is Tabular

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Answer:

m = 3.99

Step-by-step explanation:

50.88 = 3 + 12 * m

50.88 - 3 = 12 * m

m = 47.88 / 12 = 3.99

Answer:not a lot

Step-by-step explanation: