A Random Sample of 25 Employees of a Local Company

question 90

Multiple Choice

A random sample of 25 employees of a local company has been taken. A 95% confidence interval estimate for the mean systolic blood pressure for all employees of the company 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.