JordanWood
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- Mar 5, 2015
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Over 10,000 runners competed in a large urban marathon. The times of the runners follow a normal distribution. Using the information given below, determine the means and the standard deviation for the runners' times. Give your answers in hours, minutes, and seconds.
* Only 16% of the runners were able to finish in less than 3 hr 43 min 31 sec.
* 97.5% of the runners needed at least 2 hr 54 min 54 sec to complete the marathon.
mean:___________________ Standard Deviation:___________________
I am unsure how to do this problem and need as much help as possible. Please and thank you.
* Only 16% of the runners were able to finish in less than 3 hr 43 min 31 sec.
* 97.5% of the runners needed at least 2 hr 54 min 54 sec to complete the marathon.
mean:___________________ Standard Deviation:___________________
I am unsure how to do this problem and need as much help as possible. Please and thank you.