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asprague24 asprague24
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Posts: 335
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A month ago
A professor was curious about her students' grade point averages (GPAs). She took a random sample of 15 students and found a mean GPA of 3.01 with a standard deviation of 0.534. Which of the following formulas gives a 99% confidence interval for the mean GPA of the professor's students?

▸ 3.01 ± 2.576

▸ 3.01 ± 2.977

▸ 3.01 ± 2.947

▸ 3.01 ± 2.977

▸ 3.01 ± 2.947
Textbook 

Stats: Modeling the World


Edition: 4th
Authors:
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Answer verified by a subject expert
dnlee1dnlee1
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Posts: 284
A month ago
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3.01 ± 2.977
1

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A month ago
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