95% CI from -20 to 230 A) We can be 95% confident that mu_1 - mu_2 lies somewher

Question

95% CI from -20 to 230 A) We can be 95% confident that mu_1 - mu_2 lies somewhere between 20 and 230. Equivalently, we can be 95% confident that mu_1 is somewhere between 20 less than and 230 more than mu_2. B) We can be 95% confident that mu_1 and mu_2 lies somewhere between -20 and 230. C) We can be 95% confident that mu_2 - mu_1 lies somewhere between 20 and 230. Equivalently, we can be 95% confident that mu_2 is somewhere between 20 less than and 230 more than mu_2. D) We can be 95% confident that mu_1 - mu_2 lies somewhere between -20 and 230. Equivalently, we can be 95% confident that mu_1 is somewhere between 20 less than and 230 more than mu_2.

Explanation / Answer

option D is correct/

as a confidence interval for a parameter gives probability to contain that parameter with in its interval values.

here as interval is for mu1 -mu2 ; therefore mu1 -mu2 should lie b/w -20 and 230.

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