(Answered) Question according to a report by scarborough research the

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Question: According to a report by Scarborough Research, the average monthly household cellular phone bill is $60. Suppose local monthly household cell phone bills are normally distributed with a standard deviation of $11.35.

a. What is the probability that a randomly selected monthly cell phone bill is more than $85?

b. What is the probability that a randomly selected monthly cell phone bill is between $45 and $70?

c. What is the probability that a randomly selected monthly cell phone bill is between $65 and $75?

d. What is the probability that a randomly selected monthly cell phone bill is no more than $40?

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