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Normally distributed with a standard deviation

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According to a report by Scarborough Research, the average monthly household cellular phone bill is $73. Suppose local monthly household cell phone bills are normally distributed with a standard deviation of $11.

a) What is the probability that a randomly selected monthly cell phone bill is less than $95?

b) What is the probability that a randomly selected monthly cell phone bill is between $62 an $84?

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Reference no: EM131429617

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