Hourly Fees A Random Sample of 15 Hourly Fees for Car Washers

question 50

Essay

Hourly Fees
A random sample of 15 hourly fees for car washers (including tips)was drawn from a normal population.The sample mean and sample standard deviation were = $14.9 and s = $6.75. ​ ​
-{Hourly Fees Narrative} Can we infer at the 5% significance level that the mean fee for car washers (including tips)is greater than 12?

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