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Amoung all auto shops in san antonio a claim is made that

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Amoung all auto shops in San Antonio, a claim is made that the mean time needed to rotate the tires on a car is 16 mintues. A study of 20 auto shops revealed a mean time of 17 minutes with a sample standard deviation of 1.5 minutes. Can we conclude thatthe claim is justified?

Reference no: EM13623733

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