Hourly Wages Narrative
A random sample of 15 hourly wages for waitresses (including tips) was drawn from a normal population. The sample mean and sample standard deviation were computed as 
= $14.9 and s = $6.75.
-Refer to Hourly Wages Narrative. Can we infer at the 5% significance level that the population mean is greater than 12? Justify your conclusion.
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, Rejection region: t > = 1...View Answer
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