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Compute the z-score of pitch with speed 98.6 mph. (Round your answer to two decimal places.) Approximately what fraction of these four-seam fastballs would you expect to have speeds between 93.8 mph and 94.6 mph? (Express your answer as a decimal, not a percent, and round to three decimal places.) P Type here to search 近

Compute the z-score of pitch with speed 98.6 mph. (Round your answer to two decimal places.) Approximately what fraction of these four-seam fastballs would you expect to have speeds between 93.8 mph and 94.6 mph? (Express your answer as a decimal, not a percent, and round to three decimal places.) P Type here to search 近

A First Course in Probability (10th Edition)
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Approximately what fraction of these 4 seam fast balls would you expect to have speeds above 94.6 mph

what will be the 4 seam fastballs among the fastest 21% of all such pitches. Above what speed must a 4 Seam fastball be in order to be included in the fastest 21% 

round to the nearest 0.1mph

O Question 20 of every Major League Baseball now records information about every pitch thrown in every game season. Statistician Jim Albert compiled data about every pitch thrown by 20 starting pitchers during the 2009 MLB season. The data set included the type of pitch thrown (curveball, changeup, slider, etc.) as well as the speed of the ball as it left the pitcher's hand. A histogram of speeds for all 30,740 four-seam fastballs thrown by these pitchers during the 2009 season is shown below, from which we can see that the speeds of these fastballs follow a Normal model with mean u = 92.12 mph and a standard deviation of o = 2.43 mph. B5 95 100 06 speed (mph) Compute the z-score of pitch with speed 98.6 mph. (Round your answer to two decimal places.) Approximately what fraction of these four-seam fastballs would you expect to have speeds between 93.8 mph and 94.6 mph? (Express your answer as a decimal, not a percent, and round to three decimal places.) Type here to search DOOD 000, COOL 3000 COun's
Transcribed Image Text:O Question 20 of every Major League Baseball now records information about every pitch thrown in every game season. Statistician Jim Albert compiled data about every pitch thrown by 20 starting pitchers during the 2009 MLB season. The data set included the type of pitch thrown (curveball, changeup, slider, etc.) as well as the speed of the ball as it left the pitcher's hand. A histogram of speeds for all 30,740 four-seam fastballs thrown by these pitchers during the 2009 season is shown below, from which we can see that the speeds of these fastballs follow a Normal model with mean u = 92.12 mph and a standard deviation of o = 2.43 mph. B5 95 100 06 speed (mph) Compute the z-score of pitch with speed 98.6 mph. (Round your answer to two decimal places.) Approximately what fraction of these four-seam fastballs would you expect to have speeds between 93.8 mph and 94.6 mph? (Express your answer as a decimal, not a percent, and round to three decimal places.) Type here to search DOOD 000, COOL 3000 COun's
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