You are given (i) X | θ is uniform on [0,0] (ii) θ is exponentially distributed...
You are given three independent random variables X, Y, and Z, all distributed exponentially, such that the hazard rate of X is Ax, the hazard rate of Y is ly, and the mean of Z is 4. You are also given that E (Y + Z) = Var (Y - X) and Var (X + Y + 2) = 3E (2Y + Z). Find dy - dx. Possible Answers A -0.05 D 10.05 20.09
Suppose that X is exponentially distributed with parameter 1 = 4. Given that X=X, Y is normally distributed with mean and standard deviation x. Which of the following is the conditional probability density of Y given X=x? (1/a)2 e 2 72 73 e 2 √2 ay (y/-)2 4e 43 e 2 72 73 4 e 40 e 2 V2 πμ
Suppose that X is exponentially distributed with parameter 1 = 4. Given that X=X, Y is normally distributed with mean and standard deviation x. Which of the following is the conditional probability density of Y given X=x? (1/a)2 e 2 72 73 e 2 √2 ay (y/-)2 4e 43 e 2 72 73 4 e 40 e 2 V2 πμ
3.9 (i) If Xi,... . Xn are i.i.d. according to the uniform distribution U (0,0), obtain the suitably normalized limit distribution for (a) If ^X(n), (b)X( n-1 (ii) For large n, which of the three statistics (a), (b), or X(n) would you prefer as an estimator for θ.
2.6 the function f(x θ)-6x-(θ+1), x 2 lde Ω-(0,0) is a p.d.f. (ii) On the basis of a random sample of size n from this pdf., show that the statistic X, sufficient for θ X is
Suppose X1, X2, ..., Xn are independent and identically distributed (iid) with a Uniform -0,0 distri- bution for some unknown e > 0, i.e., the Xi's have pdf Suppose X1, X2,..., Xn are independent and identically distributed (iid f(3) = S 20, if –0 < x < 0; 20 0, otherwise. (a) (4 pts) Briefly explain why or why not this is an exponential family (b) (5 pts) Find one meaningful sufficient statistic for 0. (By "meaningful”, I mean it...
4. Let y1θ ~iid Uniform (0,0), for i-1, n, Assume the prior distribution for θ to , be Pareto(a, b), where p()b1 for 0> a and 0 otherwise. Find the posterior distribution of θ.
Let X,X,, X, be a random sample of size 3 from a uniform distribution having pdf /(x:0) = θ,0 < x < 0,0 < θ, and let):く,), be the corresponding order statistics. a. Show that 2Y, is an unbiased estimator of 0 and find its variance. b. Y is a sufficient statistic for 8. Determine the mean and variance of Y c. Determine the joint pdf of Y, and Y,, and use it to find the conditional expectation Find the...
X is a random variable exponentially distributed with mean Y, where Y is uniformly distributed on the interval [0,2], Find P(X>2|Y>1) roblems: X is a random variable exponentially distributed with mean Y, where Y is uniformly distributed on the interval [0,2], Find P(X>2|Y>1) roblems:
(c). X, X,...,x, is a random sample from a population distributed as uniform(0,0). Let Y, = min(x, X...,X,) and Y. = max(x, X.....X.). Find E(YY) (50 marks)