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Author Question: At the U.S. Open Tennis Championship a statistician keeps track of every serve that a player hits ... (Read 115 times)

DelorasTo

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on: Feb 14, 2020

Question 1

The calculator screens summarize a data set.

a. Identify the mean and the sample standard deviation.  Round to one place after the decimal, where necessary.
b. Find the interval that corresponds to measurements within two standard deviations of the mean.

Question 2

At the U.S. Open Tennis Championship a statistician keeps track of every serve that a player hits during the tournament. The statistician reported that the mean serve speed was 100 miles per hour (mph) and the standard deviation of the serve speeds was 15 mph. Assume that the statistician also gave us the information that the distribution of serve speeds was mound-shaped and symmetric.  What percentage of the player's serves were between 115 mph and 145 mph?
◦ at most 34%
◦ at most 2.5%
◦ at most 13.5%
◦ approximately 16%
Statistics ¦ McClave, Sincich, Tamarack ¦ 12th Edition
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Marked as best answer by DelorasTo on Feb 14, 2020

Kimmy

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Reply #1 on: Feb 14, 2020
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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DelorasTo

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Reply 2 on: Feb 14, 2020
:D TYSM

cam1229

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

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