12) density function: Given a set of data points 11, 12,..., In that are i.i.d. drawn...
(c) Find the variance of Y. 3. A random variable Y has the density function f(y) = Ky exp(-y/4), for osy<0. Then, [3+3+4=10 points) (a) Find the constant K. (b) Find the variance of Y. (C) Evaluate P(x > ).
Let f(x,y) = exp(-x) be a probability density function over the plane. Find the probabilities: Parta)P( X2 + y2 <a), a > 0, Part b)P(x2 + y2 <a), a > 0.
Find Var(2X-Y) Two random variables X and Y are i.i.d. and their common p.d.f. is given by f )- c(1+r) if 0 <r < 1. otherwise. f(3) = 10
4. [10 pts] Let X be a random variable with probability density function if 1 < a < 2, 2 f(a)a 0 otherwise. Find E(log X). Note: Throughout this course, log = loge.
(4) Find the Laplace transform of this function: Set if 0 <t <2, 0 if 2 <t.
11. Find the values of all trig ratios given csct = 3 and cost<0. 12. Determine if f(x)= xsin(x) is an even or odd function. All algebra steps must be followed and justifications for making decisions.
6. Let Y be a continuous random variable with probability density function Oyo-1, for 0< y< k; f(y) 0, otherwise, where 0 > 1 and k > 0. (a) Show that k = 1. (b) Find E(Y) and Var(Y) in terms of 0. (c) Derive 6, the moment estimator of 0 based on a random sample Y1,...,Y. (d) Derive ô, the maximum likelihood estimator of 0 based on a random sample Y1,..., Yn. (e) A random sample of n =...
please show all steps with justifications 21. Assume the joint density function of X and Y is given by fx,x(x, y) = Cxy if 0 < x <y< 2 and zero otherwise. Compute the constant C.
The probability density function of X is given by 0 elsewhere Find the probability density function of Y = X3 f(r)-(62(1-x)for0 < x < 1
7. Suppose that the joint density of X and Y is given by f(x,y) = e-ney, if 0 < x < f(z, y) = otherwise. Find P(X > 1|Y = y)