Insurance Companies Track Life Expectancy Information to Assist in Determining

Insurance companies track life expectancy information to assist in determining the cost of life insurance policies.ABI Insurance randomly sampled 100 recently paid policies and determined the average age of clients in this sample to be 77.7 years with a standard deviation of 3.6.The 90% confidence interval for the true mean age of its life insurance policy holders is ________________________ .

A) 77.1 to 78.3 years
B) 76.87 to 80.33 years
C) 75.4 to 80 years
D) 74.1 to 81.3 years
E) 72.5 to 82.9 years