Answer:
y=11
Step-by-step explanation:
Solve for x . Round to the nearest tenth, if necessary.
D
x
C
1
B
30
Answer: 0.6
Step-by-step explanation:
When a number is divided by 6 the answer is 37 with a remainder of 4 what is the number
Answer:
6 × 37 + 4 = 226 is the answer
Answer: 226
Step-by-step explanation: 37 times 6 equals 222 if you add 4 it gives you 226. 226 divided by 6 equals 37 with a remainder of 4. Hope this helps!
The personnel director of a large hospital is interested in determining the relationship (if any) between an employee's age and the number of sick days the employee takes per year. The director randomly selects eight employees and records their age and the number of sick days which they took in the previous year.
Employee 1 2 3 4 5 6 7 8 9 10
Age 30 50 40 55 30 28 60 25 30 45
Sick Days 7 4 3 2 9 10 0 8 5 2
The estimated regression line and the standard error are given.
Sick Days = 14.310162-0.2369(Age)
Se= 1.682207
Find the 90% confidence interval for the average number of sick days an employee will take per year, given the employee is 22.
Answer:
CI ( 90% ) = ( 5.9694 ; 12.2272)
Step-by-step explanation:
The regression line is:
Sick Days = 14.310162 - 0.2369 (Age)
The employee 22 years old will have:
SD = 14.310162 - 0.2369 (22)
SD = 14.310162 - 5.2118 ⇒ SD = 9.0983
SE = 1.682207
And CI 90 % α = 10% α =0.1 α/2 = 0.05
sample size n = 10
degree of freedom df = n - 2 df = 8
From t-student table we find t(c) = 1.86
CI ( 90% ) = ( SD[22 years]) ± t(c)*SE
CI ( 90% ) = 9.0983 ± 1.86*1.682207
CI ( 90% ) = 9.0983 ± 3.1289
CI ( 90% ) = ( 5.9694 ; 12.2272)
Using the t-distribution, it is found that the 90% confidence interval for the average number of sick days an employee will take per year, given the employee is 22 is (6, 12.2).
We are given the standard error for the sample, which is why the t-distribution is used to solve this question.
The information to build the interval is:
Sample mean of [tex]S(22) = \overline{x} = 14.310162 - 0.2369(22) = 9.1[/tex].Standard error of [tex]s = 1.682207[/tex]. Sample size of [tex]n = 10[/tex].The confidence interval is:
[tex]\overline{x} \pm ts[/tex]
The critical value, using a t-distribution calculator, for a two-tailed 90% confidence interval, with 10 - 1 = 9 df, is t = 1.8331.
Then:
[tex]\overline{x} - ts = 9.1 - 1.8331(1.682207) = 6[/tex]
[tex]\overline{x} + ts = 9.1 + 1.8331(1.682207) = 12.2[/tex]
The 90% confidence interval for the average number of sick days an employee will take per year, given the employee is 22 is (6, 12.2).
A similar problem is given at https://brainly.com/question/15180581
Find the sum of the interior angle measures of a 5-gon.
Answer:
540°
Step-by-step explanation:
The sum of interior angles in a polygon is equal to 180(x-2) where x is the number of sides. Since there are 5 sides, 180(5-2)=540°.
Suppose that two investors A and B have exhibited the indifference probabilities as shown in table below. Indifference probability Investor A Investor B Net return (RM) -2000 0 0 - 1000 0.70 0.10 0 0.80 0.20 1000 0.85 0.30 2000 0.90 0.50 3000 0.95 0.60 4000 1.00 1.00 a) Determine the utility value (for each monetary value) for each investor and fill it in table above. b) Graph the utility functions for both investors and categorize each investor as either a risk- averse person or a risk seeker. c) Suppose that investor A has the chance to invest in one of two ventures. Venture I can produce a net return of RM3000 with probability 0.40 or a net loss of RM1000 with probability 0.60. Venture II can produce a net return of RM2000 with probability 0.60 and no return with probability 0.40. Based on utility function in (b), use the expected utility criterion to determine the venture investor A should select. What is the expected monetary value associated with the selected venture?
Answer:
Da Answer is Suppose that two investors A and B have exhibited the indifference probabilities as shown in table below. Indifference probability Investor A Investor B Net return (RM) -2000 0 0 - 1000 0.70 0.10 0 0.80 0.20 1000 0.85 0.30 2000 0.90 0.50 3000 0.95 0.60 4000 1.00 1.00 a) Determine the utility value (for each monetary value) for each investor and fill it in table above. b) Graph the utility functions for both investors and categorize each investor as either a risk- averse person or a risk seeker. c) Suppose that investor A has the chance to invest in one of two ventures. Venture I can produce a net return of RM3000 with probability 0.40 or a net loss of RM1000 with probability 0.60. Venture II can produce a net return of RM2000 with probability 0.60 and no return with probability 0.40. Based on utility function in (b), use the expected utility criterion to determine the venture investor A should select. What is the expected monetary value associated with the selected venture?
Step-by-step explanation:
LESSSSSSS GOOOOOOOOOO
Sasha asked her classmates, "How many days do you exercise in a typical
week? The dot plot shows Sasha's data.
Time Spent Exercising
4
Number of days
How many observations did she record?
A. 20
B. 18
C. 7
D. 5
Plz help find the rule 50 points
Answer:
1², 2²,3², 4², 5², 6², 7², 8², 9², 10², 11², 12², 13², 14², 15², 16², 17², 18², 19², 20²,........
Each number is multiplied by itself.
According to Descartes rule what is the possible number of positive roots and negative roots
Answer:
Step-by-step explanation: There is exactly one positive root; there are two negative roots, or else there are none .
Plz I need help with only the perimeter one
Answer:
I believe the answer is 25.3
Answer:
25.4
Step-by-step explanation:
add em up then put the .3 after you add it up
Similar Triangles
Use the diagram, which is not drawn to scale, to decide which proportions are true.
a. I and IV only
b. II only
c. I and II only
d. I only
Please select the best answer with the choices provided
Answer:
A. I and IV only
Step-by-step explanation:
I calculated it logically
Pleaseeee helpppppppp!!!
Answer:
x = 46°
Step-by-step explanation:
Appling the principle of supplementary angle in Geomentry.
Supplementary angle: These are angles that sum up to 180°
From the diagram above, x and 134° are supplementry because they sum up to 180°.
Therefore,
134+x = 180 (Supplementary angle)
Solve for x
x = 180-134
x = 46°
Therefore, the value of the missing angle is 46°
If a price decreases by 20%, I can calculate 20% of the price and subtract it
from the original price.
Or I can calculate in one step if I find ____ % of the original price
Answer:
To subtract any percentage from a number, simply multiply that number by the percentage you want to remain. In other words, multiply by 100 percent minus the percentage you want to subtract, in decimal form. To subtract 20 percent, multiply by 80 percent (0.8)
Step-by-step explanation:
any one smart and can help me catch up? ill give many points
Answer:
4/15
Step-by-step explanation:
1) find common denominator, 15 in this problem
[tex]\frac{4}{5}= \frac{12}{15}[/tex]
2) solve
[tex]\frac{12}{15}- \frac{8}{15} = \frac{4}{15}[/tex]
a radio costs $40. the tax rate is 7.5%. what is the tax on this radio?
Which of the following choices demonstrates the converse of the Pythagorean theorem correctly? (Assume that angle C is the right angle in the triangle ABC. a, b, c stands for side lengths BC, AC, and AB respectively)
A) If a2 + c2= b2, it’s a right triangle
B) If c2 + b2=a2, it’s a right triangle
C)If a2 + b2=c2, it’s a right triangle
D) None of the above.
round 98,376 to the nearest thousand
Answer:
98000
Step-by-step explanation:
What is the solution set of the system of equations
x+y = 5 and y=x^2- 25?
1) {(0.5) (11,-6)}
2) {(5,0).(-6,11)
3) {(-5,0),(6,11)
4) {(-5,10).(6.-1)
A bag contains 7 red marbles, 8 blue marbles and 4 green marbles. If three marbles
are drawn out of the bag, what is the probability, to the nearest 100oth, that all three
marbles drawn will be blue?
Answer:
Step-by-step explanation:
A bag contains 8 red marbles, 3 blue marbles and 7 green marbles.
Total = 18 marbles.
Probability of drawing three red marbles = probability of drawing one red without replacement + probab of drawing another without reeplacement + probab of drawing a third without replacement.
Probability of drawing three red marbles = 8/18 + 7/17 + 6/16 = 0.4444 + 0.4118 + 0.3750 = 1.2312.
1. f (x) = 5x + 10. If x = 10, then what is the value of f(x)?
A 25
B 60
12.
D 5
(Worth 10 points)
Answer:
B: 60
Step-by-step explanation:
f(x)= 5x+10, if x=10
f(10)=5(10)+10
5(10)+10=60
f(10)=60
Which choices are equivalent to the exponential expression below? Check all
that apply
Oh
A.
52
O B.
O C. 2:
D.
9
25
E.
9
F.
6
10
Answer:
a b and d
Step-by-step explanation:
I did it on edge and got it right
Choose all the numerals that when you multiplied by 58 equal a product greater than 58.
If x=-4 what is the value of the following expression?
2x^2 +3x -2
18
12
-22
-46
Answer:
i think it's -46 but i don't know srry if this does not help
Step-by-step explanation:
It has been observed that some persons who suffer acute heartburn, again suffer acute heartburn within one year of the first episode. This is due, in part, to damage from the first episode. The performance of a new drug designed to prevent a second episode is to be tested for its effectiveness in preventing a second episode. In order to do this two groups of people suffering a first episode are selected. There are 45 people in the first group and this group will be administered the new drug. There are 75 people in the second group and this group will be administered a placebo. After one year, 12% of the first group has a second episode and 14% of the second group has a second episode. Conduct a hypothesis test to determine, at the significance level 0.1, whether there is reason to believe that the true percentage of those in the first group who suffer a second episode is less than the true percentage of those in the second group who suffer a second episode.
A. [ z < -1.65, RHo].
B. [ z < -1.65 and z > 1.65, FRHo].
C. [z > 1.65, FRHo].
D. [z < -1.65 and z > 1.65, FRHo].
E. [z > -1.65 and z < 1.65, RHo].
F. None of the above.
Answer:
F. None of the above.
Step-by-step explanation:
Let the null and alternate hypothesis be
H0: p1 ≥ p2 against the claim Ha: p1 < p2
the significance level is 0.1
The critical region is z < z∝= 1.28
The test statistic is
Z= ( p^1-p^2)- (p1-p2)/√p1^q1^/n1 + p2^q2^/n2
Here n1= 45 , n2= 75
p1= 0.12 p2= 0.14
q1= 0.88 q2= 0.86
z= 0.12- 0.14/√0.12*0.88/45 +0.14*0.86/75
Z= 0.02/ √0.00235 + 0.00161
Z= 0.02/0.062891
z= 0.318
The calculated value of z= 0.318 lies in the critical region z < 1.28
therefore accept Ha.
All of the options are incorrect as the critical value for one tailed test for 0.1 is 1.28 .
The value of all of the quarters and dimes in a parking meter is $6. There are twice as many quarters as dimes. What is the total number of dimes in the parking meter?
Answer:
subject?
Step-by-step explanation:
Which ratio is equivalent to the scale 1cm/50mi
1;50
49;50
50;1
1;51
Answer:
1;50
Step-by-step explanation:
The ratio shows how many times one value is contained in another value.
The ratio equivalent to the scale of 1cm/50mi is 1:50.
Option A is the correct answer.
What is a ratio?The ratio shows how many times one value is contained in another value.
Example:
There are 3 apples and 2 oranges in a basket.
The ratio of apples to oranges is 3:2 or 3/2.
We have,
The ratio is written in the form of a numerator and a denominator.
Now,
1cm / 50 miles is in the form of a numerator and a denominator.
Now,
1cm : 50 miles = 1cm / 50 miles
= 1:50
Thus,
The ratio equivalent to the scale of 1cm/50mi is 1:50.
Option A is the correct answer.
Learn more about ratios here:
https://brainly.com/question/2462048
#SPJ2
20 points and brainiest
Mark wants to invest his money in a bank account and has been presented with two options.
Time of Deposit Year 1 Year 2 Year 3 Year 4
Account A $1000 $1100 $1200 $1300 $1400
Account B $1000 $1100 $1210 $1331 $1464.10
Part A: Which account is linear? Which is exponential?
Part B: Which account is the better investment? Why?
Part C: Write an equation to model each of the accounts.
A family eats at a restaurant and leaves a tip that
increases the cost of the meal by 20%. The cost of the
meal before the tip is $41.27. How much is the cost of the
meal with the tip included?
Answer:
49.52
Step-by-step explanation:
Answer:
49.52 !!
Step-by-step explanation:
They’re correct ⬆️
This is rlly easy I just don’t feel like doin it Someone help lol
Thiago is saving to buy a new bike that costs $90. He has saved $75. What fraction of the cost has Thiago already saved?
Answer:
5/6
Step-by-step explanation:
Total cost - $90
Saved - $75
Fraction ( before simplifying ) - 75/90
Fraction ( after simplifying ) - 5/6
There you go :)
Can someone please help me with this question?!? I am so confused and I don't know how to answer it.
Use the graph of the function f to decide whether the value of the given quantity exists. If it does, find it. If not, explain why.
a. f(0)
b. lim f(x) x->0
c. f(2)
d.lim f(x) x->2
9514 1404 393
Answer:
a. f(0) = 1
b. DNE (does not exist)
c. DNE
d. lim = 3
Step-by-step explanation:
The function exists at a point if it is defined there. The function is defined anywhere on the solid line and at solid dots. It is not defined at open circles. So, the function is defined everywhere except (2, 3), which has an open circle.
The open circle at (0, 4) prevents the function from being doubly-defined at x=0, since it is already defined to be 1 at x=0.
This discussion tells you ...
f(0) = 1
f(2) does not exist. There is a "hole" in the function definition there.
__
The function has a limit at a point if approaching from the left and approaching from the right have you approaching that same point.
Consider the point (1, 2). The graph is a solid line through that point. Approaching from values less than x=1, we get to the same point (1, 2) as when we approach from values greater than x=1.
Similarly, consider the point (2, 3). Approaching from values of x less than 2, we get to the same point (2, 3) as when we approach from x-values greater than 2. The limit at x=2 is 3. The only difference from the previous case is that the function is not actually defined to be that value there.
__
Now consider what happens at x=0. When we approach from the left, we approach the point (0, 4). When we approach from the right, we approach the point (0, 1). These are different points. Because they are different coming from the left and from the right, we say "the limit as x→0 does not exist."
__
In summary, ...
a) f(0) = 1
b) lim x → 0 does not exist
c) f(2) does not exist
d) lim x → 2 = 3
_____
Additional comment
The significance of the function not being defined at a point where the limit exists, (2, 3), is that the function is not continuous there. This kind of discontinuity is called "removable", because we could make the function continuous at x=2 by defining f(2) = 3 (that is, "filling the hole").