Studies show about 25 percent of the workforce falls in the "difficult to work with" category

An incontestability clause gives insurance companies a statutory period of time to pay the claims suffered by the insured

Indicate whether the statement is true or false

In order to determine the average weight of carry-on luggage by passengers in airplanes, a sample of 16 pieces of carry-on luggage was weighed. The average weight was 20 pounds. Assume that we know the standard deviation of the population to be 8 pounds. Also, assume the population is normally distributed

a. Determine a 97% confidence interval estimate for the population mean weight of the carry-on luggage. b. Determine a 95% confidence interval estimate for the population mean weight of the carry-on luggage.