For a random sample of size 22 ( le n = 22 ) jone has calculated the 95%% confidence interval for u and obtained the
For a random sample of size 22 ( le n = 22 ) jone has calculated the 95%% confidence interval for u and obtained the result ( 17. 97, 26. 67 ). a ) what is the point estimate for that sample ? b) what is the standard deviation for that sample
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