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Statistics

Consider the following hypothesis test:

H₀: µ ≤ 20

H_a: 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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Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M9161997

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