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Assignment help 987

A large national study conducted in 2004 found that the mean systolic blood pressure for males aged 50 was 130 with a standard deviation of 15 (assume this is the population standard deviation). Researchers hypothesize that due to increased stress in the workplace, systolic blood pressures have increased. In order to test this hypothesis a random sample of 200 males aged 50 in 2014 was selected and found to have a mean systolic blood pressure of 136. Use?=.05. Give 1. the hypotheses, 2. appropriate test, 3. decison rule, 4. calculated test statistic, and 5. conclusion with a comparison to the critical value or alpha.


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