The population of waiting times at a fast-food restaurant

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You want to estimate s for the population of waiting times at a fast-food restaurant's drive-up windows, and you want to be 95% confident that the sample standard deviation is within 20% of s. Find the minimum sample size needed. Is this sample size practical?

Reference no: EM13887306

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The population of waiting times at a fast-food restaurant : You want to estimate s for the population of waiting times at a fast-food restaurant's drive-up windows, and you want to be 95% confident that the sample standard deviation is within 20% of s. Find the minimum sample size needed. Is this sample siz..

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