Suppose the sample results in Problem 10.27 are based on a sample of n = 50 hr. Can the null hypo

Suppose the sample results in Problem 10.27 are based on a sample of n = 50 hr. Can the null hypo

Suppose the sample results in Problem 10.27 are based on a sample of n = 50 hr. Can the null hypothesis be rejected at the 5 percent level of significance?

Problem 10.27

A fast-food chain will build a new outlet in a proposed location only if more than 200 cars per hour pass the location during certain hours. For 20 randomly sampled hours during the designated hours, the average number of cars passing the location is X = 208:5 with σ = 30:0.

 

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