A manufacturer of tires wants to advertise a mileage interval that excludes no more than
Chapter 4, Problem 4.146(choose chapter or problem)
A manufacturer of tires wants to advertise a mileage interval that excludes no more than 10% of the mileage on tires he sells. All he knows is that, for a large number of tires tested, the mean mileage was 25,000 miles, and the standard deviation was 4000 miles. What interval would you suggest?
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