A random sample of 25 employees of a local company has been measured. A 95% confidence interval estimate for the mean systolic blood pressure for all company employees is 123 to 139. Which of the following statements is valid?

a) 95% of the sample of employees has a systolic blood pressure between 123 and 139.

b) If the sampling procedure were repeated many times, 95% of the resulting confidence intervals would contain the population mean systolic blood pressure.

c) 95% of the population of employees has a systolic blood pressure between 123 and 139.

d) If the sampling procedure were repeated many times, 95% of the sample means would be between 123 and 139.

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c 95 of the popul... View the full answer