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In: Statistics and Probability

Find the indicated confidence interval. Assume the standard error comes from a bootstrap distribution that is...

Find the indicated confidence interval. Assume the standard error comes from a bootstrap distribution that is approximately normally distributed.

a) A 99% confidence interval for a proportion p if the sample has n=400 with p^=0.80, and the standard error is SE=0.02.

b) A 95% confidence interval for a difference in proportions p1-p2 if the samples have n1=50 with p^1=0.67 and n2=90 with p^2=0.57, and the standard error is SE=0.08.

c) A 95% confidence interval for a difference in means μ1-μ2 if the samples have n1=80 with x¯1=248 and s1=53and n2=120 with x¯2=227 and s2=44, and the standard error is SE=7.16.

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orchestra answered 2 years ago
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