EXERCISE 5 Suppose that X1,·,Xm and Y1, , Yn are two samples, with X; between the sample means, X – Ỹ, is then a linear combination of m +n normal random variables. All the random variables are independent. Answer the following questions: N(u1,01) and Y; ~ N(u2, 02). The difference a. Use moment generating functions to show that X - Ý follows a normal distribution. Find the mean and variance of this distribution. b. Suppose oi = 2, o = 2.5, and m = n. Find the sample size n so that X - Y will be within one unit of µi – µ2 with probability 0.95.
EXERCISE 5 Suppose that X1,·,Xm and Y1, , Yn are two samples, with X; between the sample means, X – Ỹ, is then a linear combination of m +n normal random variables. All the random variables are independent. Answer the following questions: N(u1,01) and Y; ~ N(u2, 02). The difference a. Use moment generating functions to show that X - Ý follows a normal distribution. Find the mean and variance of this distribution. b. Suppose oi = 2, o = 2.5, and m = n. Find the sample size n so that X - Y will be within one unit of µi – µ2 with probability 0.95.
Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter9: Multivariable Calculus
Section9.1: Functions Of Several Variables
Problem 34E: The following table provides values of the function f(x,y). However, because of potential; errors in...
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