Multiple Choice
The speed of college tennis player Jaron Jackson's first serve averages 125 mph, with a standard deviation of 4 mph.If the distribution of service speeds is normal, what proportion of Jaron's serves will be less than 136 mph?
A) .9970
B) .8762
C) .8356
D) .9721
E) .9402
Correct Answer:
Verified
Correct Answer:
Verified
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