A 95 confidence interval for the mean lead concentration in

A 95% confidence interval for the mean lead concentration in the urine of adult men working with lead (for smelting) is 8.22 to 11.98 micrograms per liter (g/l).

Which of the following is the correct interpretation for this confidence interval?

A) We are 95% confident that the sample mean lead concentration is between 8.22 and 11.98 g/l.

B) There is a 95% chance that a randomly selected man from this population would have a lead concentration between 8.22 and 11.98 g/l.

C) We are 95% confident that the population mean lead concentration is between 8.22 and 11.98 g/l.

D) There is a 95% chance that the mean lead concentration of another random sample from this population would be between 8.22 and 11.98 g/l.

Solution

answer is

B) There is a 95% chance that a randomly selected man from this population would have a lead concentration between 8.22 and 11.98 g/l.