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As reported in "Runner's World" magazine, the times of the finishers in the New York City...

As reported in "Runner's World" magazine, the times of the finishers in the New York City 10 km run are normally distributed with a mean of 61 minutes and a standard deviation of 9 minutes. Let x denote finishing time for the finishers. a) The distribution of the variable x has mean ___ and standard deviation ___ b) The distribution of the standardized variable z has mean ___ and standard deviation ___ c) The percentage of finishers with times between 35 and 75 minutes is equal to the area under the standard normal curve between ___ and ___ d) The percentage of finishers with times exceeding 88 minutes is equal to the area under the standard normal curve that lies to the ___ of ___

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TOPIC:Normal distribution.

milcah answered 1 hour ago
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