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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 221 times)

joesmith1212

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on: Feb 14, 2020

Question 1

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. If nothing is known about the shape of the distribution, what percentage of the player's serve speeds are less than 70 mph?
◦ approximately 2.5%
◦ at most 25%
◦ at most 11%
◦ approximately 5%
◦ at most 12.5%

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 of a particular player was 104 miles per hour (mph) and the standard deviation of the serve speeds was 11 mph.  If nothing is known about the shape of the distribution, give an interval that will contain the speeds of at least three-fourths of the player's serves.
◦ 82 mph to 126 mph
◦ 71 mph to 137 mph
◦ 126 mph to 148 mph
◦ 93 mph to 115 mph
Statistics ¦ McClave, Sincich, Tamarack ¦ 12th Edition
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Marked as best answer by joesmith1212 on Feb 14, 2020

lkanara2

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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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Mrm M

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Reply #2 on: Sep 13, 2020
nothing


Mrm M

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Reply #3 on: Sep 13, 2020
Thank you!
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