A test is made of H0: = 50 versus H1: > 50. A sample of
Question:
A test is made of H0: μ = 50 versus H1: μ > 50.
A sample of size n = 75 is drawn, and x̄ = 56.
The population standard deviation is σ = 20.
a. Compute the value of the test statistic z.
b. Is H0 rejected at the α = 0.05 level?
c. Is H0 rejected at the α = 0.01 level?
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Jonas Araujo
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