Question: According to a report by Scarborough Research the average monthly

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?


View Solution:


Sale on SolutionInn
Sales2
Views345
Comments
  • CreatedFebruary 19, 2015
  • Files Included
Post your question
5000