The National Center for Health Statistics reports that the s…
Questions
The Nаtiоnаl Center fоr Heаlth Statistics repоrts that the systolic blood pressure for males 35 to 44 years of age has mean 118 and standard deviation 10. The medical director of a large company looks at the medical records of 225 executives in this age group and finds that the mean systolic blood pressure in this sample is =117. At a 5% significance level, the data fail to show significant evidence that the mean blood pressure of a population of executives differ from the national mean µ=118. Based on the data, a 95% confidence interval for the population mean systolic blood pressure for males 35 to 44 years of age is
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