.The Quicky Zippy Lube Station has a mean time for an oil change
as 12.6 minutes...
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.The Quicky Zippy Lube Station has a mean time for an oil changeas 12.6 minutes with a standard deviation of 4.15 minutes. (a) Whatis the probability that an oil change will take more than 16.0minutes? (b) What is the probability that a random sample of 22 oilchanges yields an average between 10.0 and 14.0 minutes?
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