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A sample of size n = 22 is drawn from a normal population. a.Find the critical value t/2 needed to construct a 90% confidence interval.

A sample of size n = 22 is drawn from a normal population.

a.Find the critical value t/2 needed to construct a 90% confidence interval.

b.If the sample size were n = 15, would the critical value be smaller or larger?

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