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According to a report by Scarborough Research, the average monthly household cellular phone bill is $73....

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 $22.

  1. What is the probability that a randomly selected monthly cell phone bill is less than $95?
  2. What is the probability that a randomly selected monthly cell phone bill is between $62 and $84?

    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 $22.

  3. What is the probability that a randomly selected monthly cell phone bill is less than $95?
  4. What is the probability that a randomly selected monthly cell phone bill is between $62 and $84?
Math   Statistics-And-Probability   
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