A union of restaurant and foodservice workers would like to estimate the mean hourly wage, H, of foodservice workers in the U.S. The union will choose a random sample of wages and then estimate u using the mean of the sample. What is the minimum sample size needed in order for the union to be 99% confident that its estimate is within $0.40 of u? Suppose that the standard deviation of wages of foodservice workers in the U.S. is about $2.10. Carry your intermediate computations to at least three decimal places. Write your answer as a whole nuhber (and make sure that it is the minimum whole number that satisfies the requirements).

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A union of restaurant and foodservice workers would like to estimate the mean hourly wage, , of foodservice workers in the U.S. The union will
choose a random sample of wages and then estimate j using the mean of the sample. What is the minimum sample size needed in order for the
union to be 99% confdent that its estimate is within $0.40 of u? Suppose that the standard deviation of wages of foodservice workers in the U.S.
is about $2.10.
Carry your intermediate computations to at least three decimal places. Write your answer as a whole nuhber (and make sure that it is the
minimum whole number that satisfies the requirements).
(If necessary, consult a list of formulas.)
Transcribed Image Text:A union of restaurant and foodservice workers would like to estimate the mean hourly wage, , of foodservice workers in the U.S. The union will choose a random sample of wages and then estimate j using the mean of the sample. What is the minimum sample size needed in order for the union to be 99% confdent that its estimate is within $0.40 of u? Suppose that the standard deviation of wages of foodservice workers in the U.S. is about $2.10. Carry your intermediate computations to at least three decimal places. Write your answer as a whole nuhber (and make sure that it is the minimum whole number that satisfies the requirements). (If necessary, consult a list of formulas.)
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