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Consider the following hypothesis test:
H0: µ ≤ 20
Ha: µ < 20
A sample of 60 provided a sample mean of 19.4. The population standard deviation is 2.
a. Compute the value of the test statistic (to 2 decimals).
b. What is the p-value (to 3 decimals)?
c. Using α = .05, can it be concluded that the population mean is less than 20?
d. Using α = .05, what is the critical value for the test statistic?
e. State the rejection rule: Reject H0 if z ___________ is the critical value.
f. Using α = .05, can it be concluded that the population mean is less than 20?
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