Assuming our input training data is: (Xi- 2, Y0). (X2-5, Y2-1). (X3-3. Y3-0), (X3-10. Y3-1). let ...
3) Let (x, y), (X2, y2), and (X3. Y3) be three points in R2 with X1 < x2 < X3. Suppose that y = ax + by + c is a parabola passing through the three points (x1, yı), (x2, y), and (x3, Y3). We have that a, b, and c must satisfy i = ax + bx + C V2 = ax + bx2 + c y3 = ax} + bx3 + c Let D = x X2 1....
= = 3, Cov(X1, X2) = 2, Cov(X2, X3) = -2, Let Var(X1) = Var(X3) = 2, Var(X2) Cov(X1, X3) = -1. i) Suppose Y1 = X1 - X2. Find Var(Y1). ii) Suppose Y2 = X1 – 2X2 – X3. Find Var(Y2) and Cov(Yı, Y2). Assuming that (X1, X2, X3) are multivariate normal, with mean 0 and covariances as specified above, find the joint density function fxı,Y,(y1, y2). iii) Suppose Y3 = X1 + X2 + X3. Compute the covariance...
Suppose you are given the following feature vectors: x1 = (1,0), x2 = (4,2), x3 = (0,-1), x4 = (-1,-1), x5 = (-2,1) Their corresponding labels are y1 = 1, y2 = 1, y3 = -1, y4 = -1, y5 = -1 Note: there is no bias term in this problem. Suppose we run perceptron on this dataset starting with w0 = (0,0). Write down the values of w1,w2,w3,w4 and w5 after each training instance, that is, wi is the...
Question 1 Consider the following Multiple Regression Model yı BoB1B2 + El, y2 BIB2E2 y3 B2Es, and y4 Bo+BI4 Suppose that & 's are independent and identically distributed N(0, o2 ) a) Write down the model in the matrix form b) Show that 2 2 1 X'X2 3 2 1.67 -1.33 0.33 (X'X) 1.67 Note that -1.33 -0.67 1 2 3 0.33 -0.67 0.67 c) Find unbiased estimators for Bo, Bi, and B2 given that y 3, y2 1, y3-...
Let (xi , f(xi)), i = 0, . . . , 3, be data points, where xi = i + 2, for i = 0, . . . , 3. Given the divided differences f[x0] = 1, f[x0, x1] = 2, f[x0, x1, x2] = −7, f[x0, x1, x2, x3] = 9, add the data point (0, 3), find a Newton form for the Lagrange polynomial interpolating all 5 data points. 3. (25 pts) Let (r,, f()), 0,3, be data...
3. Suppose that X1, X2, X3 be i.i.d. random variables with P(Xi 0) 2/5 and P(X 1) 3/5. Find the MGFof X, + X2 + X 3. 3. Suppose that X1, X2, X3 be i.i.d. random variables with P(Xi 0) 2/5 and P(X 1) 3/5. Find the MGFof X, + X2 + X 3.
do 11.3 please Example 11.2b Let us reconsider Example 11.2a, where we have 5 to invest among three projects whose return functions are f(x) = 2x . 1+x f(x) = 10( I-e-x). Let xi (j) denote the optimal amount to invest in project 1 when we have maxlfi(l), f2(1), f3(1))-max(5, 1632 6.32, a total of j to invest. Because we see that Xi(1)=0, X2(I) = 0, x3(1)=1. Since max(f(xdl) + I)-f(xdl)) = max(5, I, 8.65-6.32) = 5. we have X1(2)...
3. {50 points} Our hypothesis function has the general form: hθ(x) = θ0 + θ1x. We give to hθ(x) values for θ0 and θ1 to approximate our output ’y’. In other words, we are trying to create a function called hθ(x) that is able to reliably map our input data (the x’s) to our output data-label (the y’s). Let us consider the following training set: {x1, x2, x3, x4, x5}={(0,0), (1,1), (2,1), (3,2), (4,4)}. (a) Plot all samples into a...
Number 2 only PLEASE 1. [40] 6.4-5. Let Xi, X2..,Xn be a random sample from dis- tributions with the given probability density functions. In each case, find the maximum likelihood estimator . 6.4-10. Let X1, X2,... ,Xn be a random sample of size n from a geometric distribution for which p is the probabil- ity of success. (a) Use the method of moments to find a point estimate 2. [20] for p. 100] 6.5-3. The midterm and final exam scores...
All of 10 questions, please. 1. Find and classify all the critical points of the function. f(x,y) - x2(y - 2) - y2 » 2. Evaluate the integral. 3. Determine the volume of the solid that is inside the cylinder x2 + y2- 16 below z-2x2 + 2y2 and above the xy - plane. 4. Determine the surface area of the portion of 2x + 3y + 6z - 9 that is in the 1st octant. » 5. Evaluate JSxz...