2. Whole Foods is an all-natural grocery chain that has 50,000 square foot stores, up from the industry average of 34,00

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2 Whole Foods Is An All Natural Grocery Chain That Has 50 000 Square Foot Stores Up From The Industry Average Of 34 00 1 (62.92 KiB) Viewed 29 times

2. 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 * =846.2 and s=32.866. Find a 95 percent confidence interval for the true 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?