A Random Sample of 15 Hourly Wages for Waitresses (Including

question 1

Short Answer

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. Can we infer at the 5% significance level that the population mean is greater than 12?
Test statistic = ______________
Critical Value(s) = ______________
Conclusion: ______________
Interpretation: ______________
Can we infer at the 5% significance level that the population mean is greater than 12, assuming that you know the population standard deviation is equal to 6.75?
Test statistic = ______________
Critical Value(s) = ______________
Conclusion: ______________
Interpretation: ______________

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Definitions:

Bureaus of Vital Statistics

Government agencies tasked with recording and maintaining essential records of births, deaths, marriages, and divorces.

Banks

Financial institutions licensed to receive deposits, offer loans, and provide various financial services to individuals and businesses.

Response Time

The amount of time it takes to react to a request, inquiry, or stimulus.

Defendant

The individual or group facing a legal case brought against them in a judicial setting.