Percentile Speed 100% Max 34.060 97.5% 30.976 90.0% 28.978 75.0% Q3 25.785 50.0% Median 23.525 25.0% Q1 21.547 10.0% 19.163 16.638 2.5% 0.0% Page 0 156 T Min

Big Ideas Math A Bridge To Success Algebra 1: Student Edition 2015
1st Edition
ISBN:9781680331141
Author:HOUGHTON MIFFLIN HARCOURT
Publisher:HOUGHTON MIFFLIN HARCOURT
Chapter11: Data Analysis And Displays
Section: Chapter Questions
Problem 3CR
icon
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Topic Video
Question
Check the model The mean of the 100 car speeds in Ex-
ercise 20 was 23.84 mph, with a standard deviation of
3.56 mph.
a) Using a Normal model, what values should border the
middle 95% of all car speeds?
b) Here are some summary statistics.From your answer in part a, how well does the model
do in predicting those percentiles? Are you surprised?
Explain.
Percentile
Speed
100%
Max
34.060
97.5%
30.976
90.0%
28.978
75.0%
Q3
25.785
50.0%
Median 23.525
25.0%
Q1
21.547
10.0%
19.163
16.638
2.5%
0.0%
Page 0 156 T
Min
Transcribed Image Text:Percentile Speed 100% Max 34.060 97.5% 30.976 90.0% 28.978 75.0% Q3 25.785 50.0% Median 23.525 25.0% Q1 21.547 10.0% 19.163 16.638 2.5% 0.0% Page 0 156 T Min
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