Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN: 9780079039897
Author: Carter
Publisher: McGraw Hill
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The average score for games played in the NFL is 20.9 and the standard deviation is 9.2 points. 40 games are randomly selected. Round all answers to 4 decimal places where possible and assume a normal distribution. a. What is the distribution of ? a - N( 20.9 1.4546 b. What is the distribution of > x? ) x - N( 836 58.185 ) o os c. P(ã > 22.9181) = | 0.0827 d. Find the 72th percentile for the mean score for this sample size. 0.0936 X e. P(19.2181 < ã < 22.6273) = | 0.8345 f. Q3 for the ã distribution =|0.9055 g. P() x < 916.724) = | 0.8065 %3D h. For part c) and e), is the assumption of normal necessary? No | Yes o
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Transcribed Image Text:The average score for games played in the NFL is 20.9 and the standard deviation is 9.2 points. 40 games are randomly selected. Round all answers to 4 decimal places where possible and assume a normal distribution. a. What is the distribution of ? a - N( 20.9 1.4546 b. What is the distribution of > x? ) x - N( 836 58.185 ) o os c. P(ã > 22.9181) = | 0.0827 d. Find the 72th percentile for the mean score for this sample size. 0.0936 X e. P(19.2181 < ã < 22.6273) = | 0.8345 f. Q3 for the ã distribution =|0.9055 g. P() x < 916.724) = | 0.8065 %3D h. For part c) and e), is the assumption of normal necessary? No | Yes o
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