In the following, assume normality is satisfied if needed.

In the following, assume normality is satisfied if needed.
(a) Given n = 20, x¯ = 100, s = 15, find the critical value tα/2,n−1 and the 90% confidence interval.
(b) Given n = 25, x¯ = 10, s = 2, find the critical value tα/2,n−1 and the 95% confidence interval.
dismebro
Asked Nov 27, 2016

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