A) Estimate σ2 with 90% confidence given that n = 15 and s2 = 12. b) Repeat part (a) with n = 30. c) What is the effect of increasing the sample size?

A) Estimate σ2 with 90% confidence given that n = 15 and s2 = 12.

b) Repeat part (a) with n = 30.
c) What is the effect of increasing the sample size?

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