Question

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 (The Wall Street Journal, March 7, 2012). 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? 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 lowperforming group of stores?


Anderson, David R.. Statistics for Business & Economics (p. 342). Kindle Edition.

Answer 1

Answer:

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