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The probability that the useful life of a tire selected

The probability that the useful life of a tire selected sigma:7.50mu 52.50:1.)The probability that the useful life of a tire selected at random is longer than 55.85 thousand miles is closest to2.)The probability that the useful life of a tire selected at random is between 47.25 and 56.25 thousand miles is closest to3.) The probability that the useful life of a tire selected at random is between 45.80 and 50.80 thousand miles is closest to4.) The probability that the useful life of a tire selected at random is between 54.75 and 58.75 thousand miles is closest to5.)The tire manufacturer is planning to offer a warranty on the useful life of the tires. If the useful life is less than the warrantied useful life, represented by , the manufacturer will offer a discount on a replacement. If the manufacturer wants about 10% of the tires to be replaced with discounts, the warrantied life should be closest to