The National Center for health statistics reports that the systolic blood pressure for males 35 to 44 years of age has mean 128. The medical director of a large company looks at the medical records of 72 executives in this age group and finds that the mean systolic blood pressure in this sample is ?̄ = 126.07 and standard deviation is S=15.
a) State the null and alternative hypotheses you would use to test whether the company’s executives have less mean systolic blood pressure than from general public.
b) Compute the test statistic.
c) With α = 0.05, what is your conclusion? (Please use the critical value approach).
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