Question

H 0: = 17

H a: 17

A sample of 40 provided a sample mean of 14.18. The population standard deviation is 4.

a. Compute the value of the test statistic (to 2 decimals). (If answer is negative, use minus “-“ sign.)  

b. What is the p-value (to 4 decimals)?

c. Using = .05, can it be concluded that the population mean is not equal to 17? (Please explain for this one)

Answer the next three questions using the critical value approach.

d. Using = .05, what are the critical values for the test statistic (to 2 decimals)? ±

e. State the rejection rule: Reject H 0 if z is the lower critical value and is the upper critical value.

f. Can it be concluded that the population mean is not equal to 17?

Answer 1

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