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Part 1: The length of time it takes to find a parking space at 9 A.M....

Part 1: The length of time it takes to find a parking space at 9 A.M. follows a normal distribution with a mean of 6 minutes and a standard deviation of 3 minutes.
Find the probability that it takes at least 9 minutes to find a parking space. (Round your answer to four decimal places.)

Part 2: The length of time it takes to find a parking space at 9 A.M. follows a normal distribution with a mean of 5 minutes and a standard deviation of 2 minutes.
Sixty percent of the time, it takes more than how many minutes to find a parking space? (Round your answer to two decimal places.)

Math   Statistics-And-Probability   
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