Mathematics, 11.01.2020 05:31 beauty2624
Running times for 400 meters are normally distributed for young men between 18 and 30 years of age with a mean of 93 seconds and a standard deviation of 36 seconds. what is the proportion of men having running times faster than 120 seconds?
a. 34
b. 227
c. 773
d. none of the answer options is correct.
Answers: 3
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