Question: Qn 8. Show that if EY X] = a + bX, then cov[X, Y] b = and a = E[Y] - bE[X] . var [X]

Qn 8. Show that if EY X] = a + bX,

then cov[X, Y] b = and a = E[Y] - bE[X] .

Qn 8. Show that if EY X] = a + bX, then cov[X, Y] b = and a = E[Y] - bE[X] . var [X]

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer
Step: 1 Unlock blur-text-image
Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock
Step: 3 Unlock

Students Have Also Explored These Related Mathematics Questions!

Q:

Lop filed for relief under Chapter 11 of the bankruptcy act on January 2, 2016. A summary of Lop's assets and equities on this date, and at June 30, 2016, follows. Estimated fair values of Lop's...

Q:

45. An individual traveling on the real line is trying to reach the origin. However, the larger the desired step, the greater is the variance in the result of that step. Specifically, whenever the...

Q:

1. A player throws a fair die and simultaneously flips a fair coin. If the coin lands heads, then she wins twice, and if tails, then one-half of the value that appears on the die. Determine her...

Q:

esway Problem 1 In class, we showed that E[aX] = aE[X] and E[X + Y] = E[X] + E[Y] for any random variables X and Y and a constant a. If X and Y are independent random variables then E[XY] = E[X]E[Y]....

Q:

Stat 401: Applied Statistical Methods II Fall 2015 Homework #3 Due Date: 10/2/2015 (in your lab) Use your own paper. Make sure to indicate your name and your GSI's name and Lab section clearly on...

Q:

Exercises Chapter 2 2.1 Marginal and conditional probability: The social mobility data from Section 2.5 gives a joint probability distribution on (Y1 , Y2 )= (father's occupation, son's occupation)....

Q:

Stat 401: Applied Statistical Methods II Fall 2015 Homework #3 Due Date: 10/2/2015 (in your lab) Use your own paper. Make sure to indicate your name and your GSI's name and Lab section clearly on...

Q:

Stat 401: Applied Statistical Methods II Fall 2015 Homework #3 Due Date: 10/2/2015 (in your lab) Use your own paper. Make sure to indicate your name and your GSI's name and Lab section clearly on...

Q:

Stat 401: Applied Statistical Methods II Fall 2015 Homework #3 Due Date: 10/2/2015 (in your lab) Use your own paper. Make sure to indicate your name and your GSI's name and Lab section clearly on...

Q:

A linear regression function is shown as follows: Y = Bo + BI*X + H, H ~ N(0, o') The data is shown in the following table: Table 1 X 4 5 1 V 4 5 2 2Choosing Bo & B, to minimize E(Y; -B. -B,X,)? (2)...

Q:

Set 4 Due April 26, 2016 BENG 100 S16 1. See iPython notebook on Ted. Fill it in, run it, and make sure it works. Submit on Ted. 2. Suppose that Y is a geometric random variable of parameter p, 1 (a)...

Q:

Design a digital oscillator with adjustable phase, that is, a digital filter which produces the signal y(n) = cos(0n + ) u (n)

Q:

Mark O. Sleuth, a recent accounting graduate, has been assigned to research several local governmental accounting and financial reporting issues. For each issue, rank the sources of guidance...

Q:

Eligible, consenting participants were enrolled in an analytical observational prospective cohort study on January 1 , 2 0 2 3 and followed until December 3 1 , 2 0 2 3 to examine the association of...

Q:

I was sure that when our battery hit the market it would be an instant success, said Roger Strong, founder and president of Solar Technology, Inc., but just look at the gusher of red ink for the...

Q:

Yohe Telecommunications is a multinational corporation that produces and distributes telecommunications technology. Although its corporate headquarters are located in Maitland, Florida, Yohe usually...

Q:

An aluminum transmission line with a diameter of 20 mm has an electrical resistance of R' elec = 2.636 x 10 -4 n/m and carries a current of 700 A. The line is subjected to frequent and severe cross...

Q:

Opportunity costs. The Wolverine Corporation is working at full production capacity producing 10,000 units of a unique product Rosebo. Manufacturing cost per unit for Rosebo is as follows:...

Q:

Pender Inc. uses the allowance method to estimate uncollectible accounts receivable. The company produced the following aging of the accounts receivable at year-end. Pender Inc. uses the allowance...

Q:

Tori and some other childeen experimented with balls to see which ones rolled. First using a piece of cardboard to use as a ramp, they angled it on a block to the floor to test the balls. Then Tori...

Q:

Explain fully what other organisational factors might have contributed to the accident?

Q:

Discuss and evaluate the possible impact of this democratic style of organisation on the role and behaviour of managers. How is it likely to differ from the role and behaviour of managers in a more...

Q:

What lessons can be drawn from the article about the importance of organisational structure?