The distance travelled by cars with automatic tranmissions before they develop transmission problems is, on average, 21,600 km with a standard deviation of 4275km. A car dealership claims that their automatic cars will last up to 18,000 km before developing transmission problems. Assume that this variable is normally distributed.
1) Are the dealership's claims reasonable? Explain.
2) What proportion of with automatic transmissions would develop transmission problems within 13,500km?
2007-08-07
06:07:40
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2 answers
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asked by
Anonymous