Assume that a random variable is normally distributed with a mean of 1,500 and a variance of 324.
a. What is the probability that a randomly selected value will be greater than 1,550?
b. What is the probability that a randomly selected value will be less than 1,485?
c. What is the probability that a randomly selected value will be either less than 1,475 or greater than 1,535? |

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