Answer:
.5
Step-by-step explanation:
Answer:
48559 if to the nearest whole number
48558.7 if to the nearest tenth
Part a)
The simple random sample of size n=36 is obtained from a population with
and
The sampling distribution of the sample means has a mean that is equal to mean of the population the sample has been drawn from.
Therefore the sampling distribution has a mean of
The standard error of the means becomes the standard deviation of the sampling distribution.
Part b) We want to find
We need to convert to z-score.
Part c)
We want to find
We convert to z-score and use the normal distribution table to find the corresponding area.
Part d)
We want to find :
We convert to z-scores and again use the standard normal distribution table.
Just plug in the numbers:
4: 16 + 24 = 40 YES
5 = 25 + 40 ≠ 40 NO
8: 64 + 48 ≠ 40 NO
10: 100 + 60 ≠ 40 NO
So A. is the correct answer. Just to be sure:
-10: 100 + ( - 60) = 40
Your answer is A. Hope that helps! :)
Answer:
Part A:
Locker A is bigger
Locker A has a volume 324 of cubic feet
Part B:
$113.4 each month
Step-by-step explanation:
∵ The dimensions of locker A are 6 , 6 , 9 feet
∴ Its volume = 6 × 6 × 9 = 324 feet³
∵ The volume of locker B is 306 feet³
∴ Locker A is bigger
Part B:
∵ The monthly rent for locker A = $0.35
∴ The cost of rent of the largest = 0.35 × 324 = $113.4 each month