Answered: Percentile Speed 100% Max 34.060 97.5%…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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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

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