Question: Construct a 90% confidence interval for 2 1/2 2 in Exercise 9.43 on page 295. Were we justified in assuming that 2 1 = 2

Construct a 90% confidence interval for σ2 1/σ2 2 in Exercise 9.43 on page 295. Were we justified in assuming that σ2 1 = σ2 2 when we constructed the confidence interval for μ1 − μ2?

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