Mileage Tests Were Conducted on a Randomly Selected Sample of 100

question 95

Multiple Choice

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

• A) 50,000
• B) 3,500
• C) (50,000/100)
• D) (3,500/100)

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