Mileage Tests Were Conducted on a Randomly Selected Sample of 100

Multiple Choice

Mileage tests were conducted on a randomly selected sample of 100 newly developed automobile tires. The results showed that the mean tread life was 50,000 miles,with a standard deviation of 3,500 miles. What is the best estimate of the mean tread life in miles for the entire population of these tires?

A) 50,000
B) 3,500
C) 500
D) 35