A study was carried out to estimate the average GPA (μ) of undergraduates at a universtiy....
A study was carried out to estimate the average GPA (μ) of undergraduates at a universtiy.
Assume that the standard deviation sigma (σ) of their GPA is 0.30.
From a random sample of students, researcher finds
(3.30, 3.60)
to be a 87% confidence interval for the average GPA.
What was the researcher's sample size?
Round up answer to an integer.
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A study was carried out to estimate the average GPA (μ) of
undergraduates at a universtiy....
Determine the sample size needed to construct a 95% confidence interval to estimate the average GPA...
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decimal.)
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0.95.
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