Please help me solve this one, our topic is Confidence Interval and attached is the formula to be used.

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Please help me solve this one, our topic is Confidence Interval and attached is the formula to be used.

t =
s/Vn
Transcribed Image Text:t = s/Vn
Exercise (to be submitted)
8.20 Whole Foods is an all-natural grocery chain that has 50,000 square foot stores, up from the industry
average of 34,000 square feet. Sales per square foot of supermarkets average just under $400 per
square foot, as reported by USA Today in an article on “A whole new ballgame in grocery shopping."
Suppose that sales per square foot in the most recent fiscal year are recorded for a random sample
of 10 Whole Foods supermarkets. The data (sales dollars per square foot) are as follows: 854, 858,
801, 892, 849, 807, 894, 863, 829, 815. Using the fact that ī = 846.2 and s = 32.866, find a 95 per-
cent confidence interval for the population mean sales dollars per square foot for all Whole Foods
supermarkets during the most recent fiscal year. Are we 95 percent confident that this mean is
greater than $800, the historical average for Whole Foods? OS WholeFoods
Assi
Transcribed Image Text:Exercise (to be submitted) 8.20 Whole Foods is an all-natural grocery chain that has 50,000 square foot stores, up from the industry average of 34,000 square feet. Sales per square foot of supermarkets average just under $400 per square foot, as reported by USA Today in an article on “A whole new ballgame in grocery shopping." Suppose that sales per square foot in the most recent fiscal year are recorded for a random sample of 10 Whole Foods supermarkets. The data (sales dollars per square foot) are as follows: 854, 858, 801, 892, 849, 807, 894, 863, 829, 815. Using the fact that ī = 846.2 and s = 32.866, find a 95 per- cent confidence interval for the population mean sales dollars per square foot for all Whole Foods supermarkets during the most recent fiscal year. Are we 95 percent confident that this mean is greater than $800, the historical average for Whole Foods? OS WholeFoods Assi
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