EXERCISE 3.7 1. A group of students from a particular program are having problem in analyzing data using statistical software. A statistics professor offered a two-day workshop on data analysis in order to help the students. The following table gives the test scores of seven students before and after attending the workshop. Before 56 69 48 74 65 71 58 After 62 73 44 85 71 70 69 a) Construct the 95% confidence interval for the difference in the mean scores before and after attending the workshop. b) Does attending the workshop improve the scores of the students?
EXERCISE 3.7 1. A group of students from a particular program are having problem in analyzing data using statistical software. A statistics professor offered a two-day workshop on data analysis in order to help the students. The following table gives the test scores of seven students before and after attending the workshop. Before 56 69 48 74 65 71 58 After 62 73 44 85 71 70 69 a) Construct the 95% confidence interval for the difference in the mean scores before and after attending the workshop. b) Does attending the workshop improve the scores of the students?
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Question

Transcribed Image Text:EXERCISE 3.7
1. A group of students from a particular program are having problem in analyzing data using
statistical software. A statistics professor offered a two-day workshop on data analysis in
order to help the students. The following table gives the test scores of seven students before
and after attending the workshop.
Before
56
69
48
74
65
71
58
After
62
73
44
85
71
70
69
a) Construct the 95% confidence interval for the difference in the mean scores before and
after attending the workshop.
b) Does attending the workshop improve the scores of the students?
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