Multiple Choice
Mileage tests were conducted on a randomly selected sample of 100 newly developed automobile tires. The average tread life was found to be 80,000 kilometres with a standard deviation of 5,600 kilometres. What is the best estimate of the average tread life in miles for the entire population of these tires?
A) 80,000
B) 5,600
C) (80,000/100)
D) (5,600/100)
E) None of the choices are correct
Correct Answer:
Verified
Correct Answer:
Verified
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