The Owner of Torpid Oaks B&B Wanted to Know the Average

Multiple Choice

The owner of Torpid Oaks B&B wanted to know the average distance its guests had traveled. A random sample of 16 guests showed a mean distance of 85 miles with a standard deviation of 32 miles. The 90 percent confidence interval (in miles) for the mean is approximately:

A) (71.0, 99.0)
B) (71.8, 98.2)
C) (74.3, 95.7)
D) (68.7, 103.2)