6. Travel Time to Work The frequency distribution listed in the table represents the travel time to work (in minutes) for a random sample of 895 U.S. adults. Travel Time (minutes) Frequency 0-9 125 10-19 271 20-29 186 30-39 121 40-49 54 50-59 62 60-69 43 70-79 20 80 80 13
6. Travel Time to Work The frequency distribution listed in the table represents the travel time to work (in minutes) for a random sample of 895 U.S. adults. Travel Time (minutes) Frequency 0-9 125 10-19 271 20-29 186 30-39 121 40-49 54 50-59 62 60-69 43 70-79 20 80 80 13
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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I keep getting a different answer than the book and I can't figure out why. The book answer is 27.7 minutes, but I am getting 27.2 minutes
![6. Travel Time to Work The frequency distribution listed in the
table represents the travel time to work (in minutes) for a
random sample of 895 U.S. adults.
Travel Time (minutes)
Frequency
0-9
125
10–19
271
20-29
186
30-39
121
40-49
54
50-59
62
60-69
43
70-79
20
80-89
13
Source: Based on data from the 2009 American
Community Survey
(a) Approximate the mean travel time to work for U.S. adults.
(b) Approximate the standard deviation travel time to work for
U.S. adults.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F9b8f0e9b-4191-4510-a02c-e23c76532d1a%2Ff055740b-e359-49a0-9008-fccff335a108%2Fxewyf5m_processed.jpeg&w=3840&q=75)
Transcribed Image Text:6. Travel Time to Work The frequency distribution listed in the
table represents the travel time to work (in minutes) for a
random sample of 895 U.S. adults.
Travel Time (minutes)
Frequency
0-9
125
10–19
271
20-29
186
30-39
121
40-49
54
50-59
62
60-69
43
70-79
20
80-89
13
Source: Based on data from the 2009 American
Community Survey
(a) Approximate the mean travel time to work for U.S. adults.
(b) Approximate the standard deviation travel time to work for
U.S. adults.
![fi
FR
125
Xifi
562.5
3929.5
MINNTES
0-9
10-19
20-29
30-39
40-49
so-59
60-(09
70-79
80-89
4,5
14,5
24.5
34.5
44,5
54.5
64.5
74.5
184.5
271
186
4174,5
2403
3379
2773.5
1490
1098.5
E xifi= 24367.5
121
54
62
43
20
13
Afi
sas
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X={ xifi
I fi
243675 -1272
MINS
895
A.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F9b8f0e9b-4191-4510-a02c-e23c76532d1a%2Ff055740b-e359-49a0-9008-fccff335a108%2Fu1hkd4s_processed.jpeg&w=3840&q=75)
Transcribed Image Text:fi
FR
125
Xifi
562.5
3929.5
MINNTES
0-9
10-19
20-29
30-39
40-49
so-59
60-(09
70-79
80-89
4,5
14,5
24.5
34.5
44,5
54.5
64.5
74.5
184.5
271
186
4174,5
2403
3379
2773.5
1490
1098.5
E xifi= 24367.5
121
54
62
43
20
13
Afi
sas
%3D
X={ xifi
I fi
243675 -1272
MINS
895
A.
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