Determine the χ2  percentile that is required to construct  each of the following CIs: (a) Confi dence level = 95%, degrees of freedom = 24, onesided (upper) (b) Confi dence level = 99%, degrees of freedom = 9, one-sided  (lower) (c) Confi dence level = 90%, degrees of freedom = 19, two-

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