# Question

Use the corollary of Theorem 4.15 on page 136 to show that if X1, X2, . . . , Xn constitute a random sample from an infinite population, then cov(Xr – , ) = 0 for r = 1, 2, . . . , n.

Theorem 4.15

If the random variables X1, X2, . . . , Xn are independent and

Then

Theorem 4.15

If the random variables X1, X2, . . . , Xn are independent and

Then

## Answer to relevant Questions

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