What are your major assumptions in these calculations

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Reference no: EM131236496

In a test measuring the life span of a certain brand of tire, 100 tires are tested. The results showed an average lifetime of 50,000 miles, with a standard deviation of 5000 miles. One hundred thousand of these tires have been sold and are on the road.

(a) After what mileage would you expect 10% of the tires to have worn out?

(b) How many tires are expected to wear out between 60,000 and 70,000 miles?

(d) What are your major assumptions in these calculations?

Reference no: EM131236496

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