why not? wny 52. Foot Locker Store Productivity. Foot Locker uses sales per square foot as a measure of store productivity. Sales are currently running at an annual rate of $406 per square foot. You have been asked by management to conduct a study of a sample of 64 Foot Locker stores. Assume the standard deviation in annual sales per square foot for the population of all 3400 Foot Locker stores is $80. a. Show the sampling distribution of x, the sample mean annual sales per square foot for a sample of 64 Foot Locker stores. b. What is the probability that the sample mean will be within $15 of the population mean? the probability of finding a c. Suppose you find a sample mean of $380. What sample mean of $380 or less? Would you consider such a sample to be an unusually low-performing group of stores? infore for flights departing from Buffalo Niagara 17 June $320.51. Assume
why not? wny 52. Foot Locker Store Productivity. Foot Locker uses sales per square foot as a measure of store productivity. Sales are currently running at an annual rate of $406 per square foot. You have been asked by management to conduct a study of a sample of 64 Foot Locker stores. Assume the standard deviation in annual sales per square foot for the population of all 3400 Foot Locker stores is $80. a. Show the sampling distribution of x, the sample mean annual sales per square foot for a sample of 64 Foot Locker stores. b. What is the probability that the sample mean will be within $15 of the population mean? the probability of finding a c. Suppose you find a sample mean of $380. What sample mean of $380 or less? Would you consider such a sample to be an unusually low-performing group of stores? infore for flights departing from Buffalo Niagara 17 June $320.51. Assume
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Question
I need help with 52.
![Bulation standard deviation is $2500.
a. Show the sampling distribution of the mean amount of health care expenditures
for a sample of 100 people.
b. What is the probability the sample mean will be within ±$200 of the population
mean?
c. What is the probability the sample mean will be greater than $12,000? If the sur-
vey research firm reports a sample mean greater than $12,000, would you question
whether the firm followed correct sampling procedures? Why or why not?
52. Foot Locker Store Productivity. Foot Locker uses sales per square foot as a measure
of store productivity. Sales are currently running at an annual rate of $406 per square
foot. You have been asked by management to conduct a study of a sample of 64 Foot
Locker stores. Assume the standard deviation in annual sales per square foot for the
population of all 3400 Foot Locker stores is $80.
of their health
a. Show the sampling distribution of x, the sample mean annual sales per square
foot for a sample of 64 Foot Locker stores.
b. What is the probability that the sample mean will be within $15 of the population
mean?
c. Suppose you find a sample mean of $380. What is the probability of finding a
sample mean of $380 or less? Would you consider such a sample to be an unusually
low-performing group of stores?
53. Airline Fares. The mean airfare for flights departing from Buffalo Niagara
International Airport during the first three months of 2017 was $320.51. Assume
the standard deviation for this population of fares is known to be $80. Suppose a
1 of 60 flights departing from Buffalo Niagara International Airport
for flights](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fa0742cae-5e0c-42da-b2ef-62566b20cd9a%2Faa4db3ad-6d53-4285-b4f2-15909699ac26%2Fq7j348g_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Bulation standard deviation is $2500.
a. Show the sampling distribution of the mean amount of health care expenditures
for a sample of 100 people.
b. What is the probability the sample mean will be within ±$200 of the population
mean?
c. What is the probability the sample mean will be greater than $12,000? If the sur-
vey research firm reports a sample mean greater than $12,000, would you question
whether the firm followed correct sampling procedures? Why or why not?
52. Foot Locker Store Productivity. Foot Locker uses sales per square foot as a measure
of store productivity. Sales are currently running at an annual rate of $406 per square
foot. You have been asked by management to conduct a study of a sample of 64 Foot
Locker stores. Assume the standard deviation in annual sales per square foot for the
population of all 3400 Foot Locker stores is $80.
of their health
a. Show the sampling distribution of x, the sample mean annual sales per square
foot for a sample of 64 Foot Locker stores.
b. What is the probability that the sample mean will be within $15 of the population
mean?
c. Suppose you find a sample mean of $380. What is the probability of finding a
sample mean of $380 or less? Would you consider such a sample to be an unusually
low-performing group of stores?
53. Airline Fares. The mean airfare for flights departing from Buffalo Niagara
International Airport during the first three months of 2017 was $320.51. Assume
the standard deviation for this population of fares is known to be $80. Suppose a
1 of 60 flights departing from Buffalo Niagara International Airport
for flights
Expert Solution
![](/static/compass_v2/shared-icons/check-mark.png)
Step 1
Given:
Sales are currently running at an annual rate of $406 per square foot.
We have,
Population mean,
Sample size,
Population standard deviation,
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