A population has distribution Value Probability 1.............................2 2............................ .6 3............................ .2 Let X1 and X2 be independent

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A population has distribution
Value
Probability
1.............................2
2............................ .6
3............................ .2
Let X1 and X2 be independent and each have the same distribution as the population.
(a) Determine the missing elements in the table for the sampling distribution of = (X1 + X2)/2.
A population has distributionValue 			Probability1............................	.22............

(b) Find the expected value of .
(c) If the sample size is increased to 81, give the mean and variance of .

Distribution
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Statistics Principles And Methods

ISBN: 9780470904114

7th Edition

Authors: Richard A. Johnson, Gouri K. Bhattacharyya

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