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You are given the following information obtained from a

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You are given the following information obtained from a random sample of 4 observations from a large, normally distributed population. (25, 47, 32, 56)

a) what is the point estimate of ??

b) Construct a 95% confidence interval for ?.

c) Construct a 90% confidence interval for ?.

d) Discuss why the 90% and 95% confidence intervals are different.

Reference no: EM13614456

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