You Will Need To Upload Your Work For This Quiz So Please Show Your Work Neatly During The Quiz Major League Baseball 1 (47.18 KiB) Viewed 34 times
You Will Need To Upload Your Work For This Quiz So Please Show Your Work Neatly During The Quiz Major League Baseball 2 (41.62 KiB) Viewed 34 times
You will need to upload your work for this quiz, so please show your work neatly DURING the quiz. Major League Baseball now records information about every pitch thrown in every game of every 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 y = 92.12 mph and a standard deviation of o = 2.43 mph. 00 2006 3 00: 100 speed Compute the z score of pitch with speed 89.4 mph. (Round your answer to 2 decimal places.)
Compute the Z-score of pitch with speed 89.4 mph. (Round your answer to 2 decimal places.) 1.11 Approximately what fraction of these four-seam fastballs would you expect to have speeds between 89.1 mph and 91.7 mph? (Express your answer as a decimal, not a percent, and round to 4 decimal places.) Approximately what fraction of these four Seam fastballs would you expect to have speeds above 91.7 mph? (Express your answer as a decimal, not a percent, and round to 4 decimal places.) A baseball fan wishes to identify the four-seam fastballs among the fastest 10% of all such pitches. Above what speed must a four-seam fastball be in order to be included in the fastest 10%? (Round your answer to the nearest 0.1 mph.) mph
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