Identify the variables and state the null and alternative hypotheses of a chi-squared test of independence. b) Find the expected count for cell (1, 1) and cell (2, 3) (that is, for cells (Lower income, Essential) and (Middle income, Not too important))
Identify the variables and state the null and alternative hypotheses of a chi-squared test of independence. b) Find the expected count for cell (1, 1) and cell (2, 3) (that is, for cells (Lower income, Essential) and (Middle income, Not too important))
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section: Chapter Questions
Problem 13PT
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Question
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a) Identify the variables and state the null and alternative hypotheses of a chi-squared test of independence.
b) Find the expected count for cell (1, 1) and cell (2, 3) (that is, for cells (Lower income, Essential) and (Middle income, Not too important))
Transcribed Image Text:The American Trends Panel (ATP), created by the Pew Research Center, is a
nationally representative panel of randomly selected U.S. adults. Wave 88
survey of the panel, "The Internet and the Pandemic", was conducted April 12-
18, 2021.
One of the questions is, "How important, if at all, has the internet been for you
personally during the coronavirus outbreak?" The following contingency table
shows the responses to this question cross-tabulated with respondent's
family income tier.
RELIANCE ON THE INTERNET DURING THE
CORONAVIRUS OUTBREAK
FAMILY INCOME
Important,
Not
Total
Not too
but not
important
important
essential
at all
Lower income
326
76
35
1126
Middle income
661
111
2239
Upper income
219
37
1076
Total
1206
224
4441
Essential
689
1434
809
2932
33
11
79
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