How large a sample of sales figures is needed to make us 95


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.

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Applied Statistics: How large a sample of sales figures is needed to make us 95
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