Find the expected count under the null hypothesis. 19. A sociologist was interested in determining if there was a relationship between the age of a young adult (18 to 35 years old) and the type of movie preferred. A random sample of 93 adults revealed the following data. Use a Chi-Square independence test to determine if age and type of movie preferred are independent at the 5% level of significance. 30-35 years old Totals 24-29 years old 15 18-23 years old Drama 8. 11 34 Science Fiction 12 10 8. 30 8. 12 29 Comedy Totals 29 33 31 93 Provided the assumptions of the test are satisfied, find the expected number of 24-29 year-olds who prefer comedies under the null hypothesis. a) 8 b) 11.56 c) 10.29 d) 7.34

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Find the expected count under the null hypothesis.
19. A sociologist was interested in determining if there was a relationship between the age of a young adult
(18 to 35 years old) and the type of movie preferred. A random sample of 93 adults revealed the
following data. Use a Chi-Square independence test to determine if age and type of movie preferred
are independent at the 5% level of significance.
30-35 years old
Totals
24-29 years old
15
18-23 years old
Drama
8.
11
34
Science Fiction
12
10
8.
30
8.
12
29
Comedy
Totals
29
33
31
93
Provided the assumptions of the test are satisfied, find the expected number of 24-29 year-olds who
prefer comedies under the null hypothesis.
a) 8
b) 11.56
c) 10.29
d) 7.34
Transcribed Image Text:Find the expected count under the null hypothesis. 19. A sociologist was interested in determining if there was a relationship between the age of a young adult (18 to 35 years old) and the type of movie preferred. A random sample of 93 adults revealed the following data. Use a Chi-Square independence test to determine if age and type of movie preferred are independent at the 5% level of significance. 30-35 years old Totals 24-29 years old 15 18-23 years old Drama 8. 11 34 Science Fiction 12 10 8. 30 8. 12 29 Comedy Totals 29 33 31 93 Provided the assumptions of the test are satisfied, find the expected number of 24-29 year-olds who prefer comedies under the null hypothesis. a) 8 b) 11.56 c) 10.29 d) 7.34
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