Question

Consider the following hypothesis test:

H0: μ = 15

Ha: μ ≠ 15

A sample of 50 provided a sample mean of 14.18. The population standard deviation is 6.

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

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

c. Using α = .05, can it be concluded that the population mean is not equal to 15? SelectYesNoItem 3

Answer the next three questions using the critical value approach.

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

e. State the rejection rule: Reject H0 if z is Selectgreater than or equal togreater thanless than or equal toless thanequal tonot equal toItem 5 the lower critical value and is Selectgreater than or equal togreater thanless than or equal toless thanequal tonot equal toItem 6 the upper critical value.

f. Can it be concluded that the population mean is not equal to 15?
SelectYesNoItem 7

Answer 1