Author Question: A random sample of 25 employees of a local company has been measured. A 95 confidence interval ... (Read 60 times)

lilldybug07 · **on:** Jun 24, 2018

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.

Question 2

When using Excel's EXPON.DIST function, one should choose TRUE for the third input if _____ is desired.
a. a probability
b. a cumulative probability
c. the expected value
d. the correct answer