How large sample of sales figures is need to make confident

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Referring to Exercise 8.20 (page 316), regard the sample of 10 sales figures for which s = 32.866 as a preliminary sample. How large a sample of sales figures is needed to make us 95 percent confident that x, the sample mean sales dollars per square foot, is within a margin of error of $10 of m, the population mean sales dollars per square foot for all Whole Foods supermarkets. DS WholeFoods

Text Book: Business Statics in Practice By BOWERMAN.

Reference no: EM13910003

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