**Unformatted text preview: **Y = X 1 + X 2 . 3. Let X have a t-distribution with p degrees of freedom. Show that X 2 has a F-distribution with 1 and p degrees of freedom. 4. Let S 2 be the sample variance of a random sample of size 6 from a N ( μ, 12) distribution. Find P (2 . 30 < S 2 < 22 . 2). 1...

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- Fall '08
- Staff
- Normal Distribution, Variance, Probability theory, probability density function, x1 + x2