According to a report by Scarborough Research, the average monthly household cellular phone bill is $73.Suppose 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 $100?,b. What is the probability that a randomly selected monthly cell phone bill is between $60 and $83?,c. What is the probability that a randomly selected monthly cell phone bill is between $80 and $90?,d. What is the probability that a randomly selected monthly cell phone bill is no more than $55?
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