Asked by Sheri

Given the sample mean of GPA, the sample SD, and the SE below:

SM: 3.2454
SD: 0.4635
SE: 0.0309

construct a 99.7% confidence interval for the population mean gpa.

My answer: 3.2145 to 9.6435
Answered by PsyDAG
99.7% = mean ± 2.965 SEm
Answered by Sheri
I am confused --- so the correct answer is 2.965 or do I have to +, - from 3.2454 to get a range?
Answered by Sheri
this answer is wrong
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