Let c be a constant and consider the density function for the random variable Y: a.Find the value of c. b. Find the cumulative distribution function F(y). c.Compute F(.8)

ele) Consider the regression model Y; = BX; + u; Where u, and X, satisfy the assumptions specified here. Let p denote an estimator of p that is constructed as ß= where Y and X are the sample means of Y, and X, respectively. Show that B is a linear function of Y,, Y2, Y Show that B is conditionally unbiased. 1 E(Y,X,, X2.. X,) = ▼ 1 „P(X, +X2+ + X,) + Y2 + + Yn) (AX, + u) 2 E(BIX,. X2 X,) =E |(X, X2.. Xn) Click to select your answer(s). W DELL P Type here to search 1/5

3. Let Sca'y if0≤x≤ 1,0 ≤ y ≤1 f(x) = otherwise Find the following: a. c such that f(x, y) is a probability density function. b. The marginal distributions of X and Y. c. Expected values of X and Y. d. Variances of X and Y.. e. Covariance of X and Y. f. The conditional distribution of X given Y g. Are X and Y independent? How do you know? = y and the conditional distribution of Y given X = x.

A density curve consists of the line segment connecting the points (0,1) and (0.5,1) and the segment connecting(0.5, 1) to the x-axis.a. Determine the coordinate point where the second segment crosses the x-axis.b. Determine the slope of that segmentc. Determine the equation of the line containing this segment (y = mx + b)d. Calculate the probability P(X > 1)

Let X be the total amount saved in dollars at the cash register. The pdf of X is given by: Value of X 20 28 40 50 58 70 probability 0.36 0.21 0.24 0.1225 0.0175 0.03 .0175 0.0025 Before I make the purchase, you would place my chance of saving $20 at 24%. Suppose you approach me after I pay for my items and ask: "Did you save any money?" If I answer "no", then you know I didn't save $20 and thus the chance of saving $20 changes from the unconditional chance 24% to the conditional chance 0%. However, if I answer "yes" my chance of saving $20 would get higher. What would be the conditional chance of saving $20 if you knew I got a discount? Mathematically, we seek: P(X = 20|X > 0 ). Even though it looks weird, it is just a conditional probability. Find it. P(X = 20|X > 0) = P(X = 20 and X > 0) / P(X > 0) = Hint: P(X = 20 and X > 0) be read off the table by identifying possible values where the event (X = 20 and X > 0) is true, don't use the multiplication rule. Do not round, express your…