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Suppose we have a random sample X1, X2, X100 ~N(, o), where = 4. 1. Construct a 95% confidence interval for , show your

Suppose we have a random sample X1, X2, X100 ~N(, o), where = 4. 1. Construct a 95% confidence interval for , show your work. 2. Construct a 90% confidence interval for and compare your result to part 1, which confidence interval is wider, the 95% confidence interval or the 90% one?

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