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Calculate the confidence interval

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Reference no: EM132523173

Gravelle Meats is in the business of selling turkeys. The mean time it takes for an employee to a turkey for sale is 4 hours. This mean was determined from a sample of 30 employees and the sample had a standard deviation of 1 hour.

We wish to construct a 90% confidence interval for the population mean.

a) Calculate the confidence interval.

b) Roughly sketch the graph and indicate the interval

c) Suppose the owner claims that the population mean is actually 3hours. Is his claim reasonable? Why/why not?

Reference no: EM132523173

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