A researcher studying public opinion on the legalization of recreational marijuana surveyed a representative sample of 1100 registered voters and asked each their age group (18 to 34, 35 to 59, and 60+), and asked if they were for or against the legalization of recreational marijuana. The contingency table of results is below. Age Group 18 to 34 For Against 192 48

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Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 10CYU
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Look at the picture, please provide me the answers a,b,c and D

ZOOM
+
Rows: AgeGroup
Columns: Opinion
Name:
A researcher studying public opinion on the
legalization of recreational marijuana surveyed a
representative sample of 1100 registered voters
and asked each their age group (18 to 34, 35 to 59,
and 60+), and asked if they were for or against the
legalization of recreational marijuana. The
contingency table of results is below.
Cell format
Count
(Expected count)
For Against Total
192
18 to 34
48 240
(157.96) (82.04)
35 to 59
306
144 450
|(296.18)(153.82)
60+
226
184 410
Age Group
18 to 34
Against
48
For
(269.85)
192
Total
724
3761100
35 to 59
306
144
60+
226
184
Chi-Square test:
A. Is there evidence of a dependence between a
registered voter's opinion and their age? Test
using α 05
Statistic
DF Value P-value
Chi-square
2 43.26
<0.0001
Formulas
B. For each age group, compute the sample
proportion that is in favor of legalizing
recreational use of marijuana, and relate these
values to the result of your test in part A?
(Obs-Exp)²
x? = E
Еxp
(Row Total)*(Column Total)
Еxp.Count
n
Сount
C. Find the expected count for the 60+ age group
against legalizing recreational use of
marijuana.
df = (r – 1)(c – 1): p =
Total
D. Check that the validity conditions for your test
are satisfied.
Transcribed Image Text:ZOOM + Rows: AgeGroup Columns: Opinion Name: A researcher studying public opinion on the legalization of recreational marijuana surveyed a representative sample of 1100 registered voters and asked each their age group (18 to 34, 35 to 59, and 60+), and asked if they were for or against the legalization of recreational marijuana. The contingency table of results is below. Cell format Count (Expected count) For Against Total 192 18 to 34 48 240 (157.96) (82.04) 35 to 59 306 144 450 |(296.18)(153.82) 60+ 226 184 410 Age Group 18 to 34 Against 48 For (269.85) 192 Total 724 3761100 35 to 59 306 144 60+ 226 184 Chi-Square test: A. Is there evidence of a dependence between a registered voter's opinion and their age? Test using α 05 Statistic DF Value P-value Chi-square 2 43.26 <0.0001 Formulas B. For each age group, compute the sample proportion that is in favor of legalizing recreational use of marijuana, and relate these values to the result of your test in part A? (Obs-Exp)² x? = E Еxp (Row Total)*(Column Total) Еxp.Count n Сount C. Find the expected count for the 60+ age group against legalizing recreational use of marijuana. df = (r – 1)(c – 1): p = Total D. Check that the validity conditions for your test are satisfied.
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