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1. The National Center for Health Statistics reports that the systolic blood pressure for males (35-44...

1. The National Center for Health Statistics reports that the systolic blood pressure for males (35-44 years of age) has a mean 128 and standard deviation 15. The medical director of a large company looks at the medical records of 105 executives in same age group and finds that the mean systolic blood pressure in this sample is 126.30. At 95% level, is this evidence that the company’s executives have a lower mean systolic blood pressure than the general population?

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