Answered: How often do users of a certain social…

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

How often do users of a certain social media post on the site? The accompanying table represents the frequency of posting for a sample of 961 respondents classified according to their age groups. At the 0.05 level of significance, is there evidence of a relationship between the frequency of posting and age group?

Calculate the test statistic.

χ2STAT=___

(Round to two decimal places as needed.)

Type of favorite music classified by age group
FREQUENCY
AGE
18-22
23-35
36-49
50-64
65 and over
Total
Several times a
day
21
22
12
1
58
About once a
30
37
14
3
86
day
3-5 days per
week
35
32
8.
3
121
1-2 days per
week
33
71
38
19
10
171
Every few weeks
Less often
20
67
46
26
4
163
18
58
56
64
18
214
Never
8.
13
40
65
20
146
Total
165
311
238
187
58
959
Print
Done
2.
99
2.
43

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