# Question: Show that if Y x is linear in x and var Y x

Show that if µY|x is linear in x and var(Y|x) is constant, then var(Y|x) = σ22 (1 – ρ2).

## Answer to relevant Questions

The following data represent more extended measurements of monthly water usage at the plant referred to in Exercise 14.98 over a period of 20 months: (a) Use an appropriate computer program to fit a linear surface to these ...Find the least squares estimate of the parameter β in the regression equation µY|x = βx. Given the joint destiny Find µY|x and µX|y. Verify that the formula for t of Theorem 14.4 can be written as Theorem 14.4 Under the assumptions of normal regression analysis, Is a value of a random variable having the t distribution with n – 2 degrees of freedom. If x01, x02, . . . , x0k are given values of x1, x2, . . . , xk and X0 is the column vector It can be shown that Is a value of a random variable having the t distribution with n- k- 1 degrees of freedom. (a) Show that for k ...Post your question