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Asample of 50 evening students' ages si obtained ni order to estimate the mean age of evening students. * = 22 years. The population variance

Asample of 50 evening students' ages si obtained ni order to estimate the mean age of evening students. * = 22 years. The population variance is 9. (a) Give a point estimate for m. (b) Find the 95 percent confidence-interval estimate for m. (c) Find the 99 percent confidence-interval estimate for m

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