The question is: A major tire manufacturer advertises that their highest quality radial tire has a distribution of wear that is mound-shaped with a mean of 60,000 miles and a standard deviation of 6,000 miles. Assume their advertisement is true.
The questions are:
Approximately, what percentage of the company's best radial tires will travel between 42,000 miles and 78,000 miles before wearing out?
Approximately what percentage of the company's best radial tires will travel more than 72,000 miles before wearing out?
I need help finding those answers - Any help is appreciated.
2007-06-05
09:22:19
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1 answers
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asked by
Zach M
2