Claim: The mean systolic blood pressure of all healthy adults is less than than 124 mm Hg. Sample data: For 252 healthy adults, the mean systolic blood pressure level is 123.61 mm Hg and the standard deviation is 16.04 mm Hg. The null and alternative hypotheses are $H_0: mu = 124$ and $H_1: mu < 124$. Find the value of the test statistic. The value of the test statistic is (Round to two decimal places as needed.)
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- Sample size (\(n\)): 252 - Sample mean (\(\bar{x}\)): 123.61 mm Hg - Population mean under the null hypothesis (\(\mu_0\)): 124 mm Hg - Sample standard deviation (\(s\)): 16.04 mm Hg Show more…
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