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31. The speed of college tennis player Jaron Jackson’s first serve averages 125 mph, with a...

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31. The speed of college tennis player Jaron Jackson’s firstserve averages 125 mph, with a standard deviation of 4 mph. If thedistribution of service speeds is normal, what proportion ofJaron’s serves will be between 131 and 133 mph?

a. .0035

b. .044

c. .0923

d. .1087

e. .036

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Transcribed Image Text

31. The speed of college tennis player Jaron Jackson’s firstserve averages 125 mph, with a standard deviation of 4 mph. If thedistribution of service speeds is normal, what proportion ofJaron’s serves will be between 131 and 133 mph?a. .0035b. .044c. .0923d. .1087e. .036

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