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Mathematics, 17.07.2020 08:01 eve2055

A random sample of 25 students had a grade point average with a mean of 2.86. Past studies have shown that the population standard deviation is 0.15 and the
population is normally distributed. Construct a 90% confidence interval for the
population mean grade point average.
0 (2.80 2.91)
0 (2.81, 2.91)
(2.78, 2.94)
(2.77, 2.95)

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