A sample of size n = 12 is drawn from a normal population. a. Find the critical

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A sample of size n = 12 is drawn from a normal population.

a. Find the critical value tα∕2 needed to construct a 98%

confidence interval.

b. If the sample size were n = 50, would it be necessary for the population to be approximately normal?

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Elementary Statistics

ISBN: 9781259969454

3rd Edition

Authors: William Navidi, Barry Monk

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