Please only do that one that is incorrect Or isn't done

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 23PFA
Question

Please only do that one that is incorrect Or isn't done 

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
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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