Question

a. A statistics practitioner wishes to test the following hypotheses:
H0: µ = 600
H1: µ < 600
A sample of 50 observations yielded the statistics x̄ = 85 and s = 45. Calculate the test statistic of a test to determine whether there is enough evidence at the 10% significance level to infer that the alternative hypothesis is true.
b. Repeat part (a) with x̄ = 590.
c. Repeat part (a) with x̄ = 595.
d. Describe the effect of increasing the sample mean.



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  • CreatedFebruary 03, 2015
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