A random sample of 175 students was selected from a large high school. They were each asked their cur grade level and whether they have a driver's license. The responses are displayed in the table. Grade Level 9th 10th 11th 12th Yes 1 21 48 Driver's License? No 28 42 20 10 The principal would like to know if these data provide convincing evidence of a relationship between grad and having a driver's license in the population of all students in her school. The random and 10% conditio met, and this table of expected counts shows that all expected counts are at least 5. Grade Level 9th 10th 11th 12th Yes 12.43 20.14 17.57 24.86 Driver's License? No 16.57 26.86 23.43 33.14 What is the value of the chi-square test statistic for this test?

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A random sample of 175 students was selected from a large high school. They were each asked their current
grade level and whether they have a driver's license. The responses are displayed in the table.
Grade Level
9th
10th
11th
12th
Yes
1
5
21
48
Driver's License?
No
28
42
20
10
The principal would like to know if these data provide convincing evidence of a relationship between grade level
and having a driver's license in the population of all students in her school. The random and 10% conditions are
met, and this table of expected counts shows that all expected counts are at least 5.
Grade Level
9th
10th
11th
12th
Yes
12.43
20.14
17.57
24.86
Driver's License?
No
16.57
26.86
23.43
33.14
What is the value of the chi-square test statistic for this test?
Transcribed Image Text:A random sample of 175 students was selected from a large high school. They were each asked their current grade level and whether they have a driver's license. The responses are displayed in the table. Grade Level 9th 10th 11th 12th Yes 1 5 21 48 Driver's License? No 28 42 20 10 The principal would like to know if these data provide convincing evidence of a relationship between grade level and having a driver's license in the population of all students in her school. The random and 10% conditions are met, and this table of expected counts shows that all expected counts are at least 5. Grade Level 9th 10th 11th 12th Yes 12.43 20.14 17.57 24.86 Driver's License? No 16.57 26.86 23.43 33.14 What is the value of the chi-square test statistic for this test?
What is the value of the chi-square test statistic for this test?
O x² = 8.79
О х2%3D 15.89
O x² = 77.18
x² = 252.46
Transcribed Image Text:What is the value of the chi-square test statistic for this test? O x² = 8.79 О х2%3D 15.89 O x² = 77.18 x² = 252.46
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