Let X₁,···,X₂ ~ N(µ₁,12) and Y₁,...,Yn ~ N(µ₂,14) be random samples from two differentpopulations. Suppose x = 14.32 and y = 10.15. If n = 20, then the 99% confidence intervalfor μ₁ −μ₂is_ (a). If we want the 99% confidence interval less than or equal to 1, we(b).need n to be at least

Range of the sampling distribution is smaller than the range of the original population .

Answered: Let X₁,···,Xn ~ N(µ₁,12) and Y₁,.,.…

A First Course in Probability (10th Edition)

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Let X₁,···,Xn ~ N(µ₁,12) and Y₁,.,. populations. Suppose x = 14.32 an for μ₁ −μ₂ is (a). If we want need n to be at least _(b).