Consider the following hypothesis test:

H ₀ : = 15

H _a : 15

A sample of 50 provided a sample mean of 14.15. The population standard deviation is 3.

a. Compute the value of the test statistic (to 2 decimals).

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

c. Using = .05, can it be concluded that the population mean is not equal to 15? Select Yes No Item 3

Answer the next three questions using the critical value approach.

d. Using = .05, what are the critical values for the test statistic? (+ or -)

e. State the rejection rule: Reject H ₀ if z is

• greater than or equal to
• greater than
• less than or equal to
• less than

equal to not equal to Item 5 the lower critical value and Select greater than or equal to greater than less than or equal to less than equal to not equal to Item 6 the upper critical value.

f. Can it be concluded that the population mean is not equal to 15?
Select Yes No Item 7

Answer rating: 100% (QA)

a H 0 Null Hypothesis 15 H A Alternative Hypothesis 15 T... View the full answer