Soc. 10.33 Organizations interested in making sure that accused persons have a trial of their peers often compare the distribution of jurors by age, education, and other socioeconomic variables. One such study in a large southern county provided the following information on the ages of 1,000 jurors and the age distribution countywide. Age 21-40 41-50 51-60 Over 60 Total 1,000 Number of jurors Age % countywide 399 231 158 212 42.1 22.9 15.7 19.3 100

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Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 30PPS
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10.33 Organizations interested in making sure that accused persons have a trial of their peers
often compare the distribution of jurors by age, education, and other socioeconomic variables.
One such study in a large southern county provided the following information on the ages of
1,000 jurors and the age distribution countywide.
Soc.
Age
21-40
41-50
51-60
Over 60
Total
399
212
Number of jurors
Age % countywide
231
158
1,000
42.1
22.9
15.7
19.3
100
a. Display the above data using appropriate graphs.
b. Is this significant evidence of a difference between the age distribution of jurors
and the countywide age distribution?
c. Does there appear to be an age bias in the selection of jurors?
Transcribed Image Text:10.33 Organizations interested in making sure that accused persons have a trial of their peers often compare the distribution of jurors by age, education, and other socioeconomic variables. One such study in a large southern county provided the following information on the ages of 1,000 jurors and the age distribution countywide. Soc. Age 21-40 41-50 51-60 Over 60 Total 399 212 Number of jurors Age % countywide 231 158 1,000 42.1 22.9 15.7 19.3 100 a. Display the above data using appropriate graphs. b. Is this significant evidence of a difference between the age distribution of jurors and the countywide age distribution? c. Does there appear to be an age bias in the selection of jurors?
Question 2
10.33b: Provide the p-value of the test, and your
reasoning
Hint: See L-20 Pdf Presentation and Lecture: p 6-7 (Exercise
10.35)
p-value=D0.385>0.05àFail to reject HO. There is
significant evidence that the age distribution of
jurors and the countywide age distribution are
similar
p-value=0.019<0.05àReject HO. There is significant
evidence that there is a difference between the
age distribution of jurors and the countywide age
distribution
p-value=0.385>0.05àFail to reject H0. There is
insufficient evidence that there is a difference
between the age distribution of jurors and the
countywide age distribution
p-value=0.019<0.05--> Reject HO .There is
significant evidence that the age distribution of
jurors and the countywide age distribution are
similar.
Transcribed Image Text:Question 2 10.33b: Provide the p-value of the test, and your reasoning Hint: See L-20 Pdf Presentation and Lecture: p 6-7 (Exercise 10.35) p-value=D0.385>0.05àFail to reject HO. There is significant evidence that the age distribution of jurors and the countywide age distribution are similar p-value=0.019<0.05àReject HO. There is significant evidence that there is a difference between the age distribution of jurors and the countywide age distribution p-value=0.385>0.05àFail to reject H0. There is insufficient evidence that there is a difference between the age distribution of jurors and the countywide age distribution p-value=0.019<0.05--> Reject HO .There is significant evidence that the age distribution of jurors and the countywide age distribution are similar.
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