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The shape of the distribution of the time required to get

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The shape of the distribution of the time required to get an oil change at a 15 minute oil change facility is unknown. However records indicate that the mean time for an oil change is 16.4 minutes and the standard deviation for oil?change time is 3.4 minutes. What is the probability that a random sample of n-35 oil changes results in a sample mean time less than 15 minutes? (round to 4 decimal places)

Reference no: EM13602980

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