Please help me to solve this probability problem.
Please help me to solve this probability problem. 2. Consider a random variable X with the...
Suppose the random variable X has probability density function (pdf) - { -1 < x<1 otherwise C fx (x) C0 : where c is a constant. (a) Show that c = 1/7; (b) Graph fx (х); (c) Given that all of the moments exist, why are all the odd moments of X zero? (d) What is the median of the distribution of X? (e) Find E (X2) and hence var X; (f) Let X1, fx (x) What is the limiting...
The following data were collected on a simple random sample of 20 patients with hypertension: Y=mean arterial blood pressure (mmHg), X1=age(years), X2= weight (kg), X3=body surface area (sq m), X4=duration of hypertension, X5 =basal pulse (beats/min), X6=measure of stress. A researcher is interested in developing a regression model to predict mean arterial blood pressure and has produced the following output: > rcorr(as.matrix(hyper)) Y X1 X2 X3 X4 X5 X6 Y 1.00 0.66 0.95 0.87 0.29 0.72 0.16 X1 0.66 1.00...
The following data were collected on a simple random sample of 20 patients with hypertension: Y=mean arterial blood pressure (mmHg), X1=age(years), X2= weight (kg), X3=body surface area (sq m), X4=duration of hypertension, X5 =basal pulse (beats/min), X6=measure of stress. A researcher is interested in developing a regression model to predict mean arterial blood pressure and has produced the following output: > rcorr(as.matrix(hyper)) Y X1 X2 X3 X4 X5 X6 Y 1.00 0.66 0.95 0.87 0.29 0.72 0.16 X1 0.66 1.00 0.41 0.38 0.34 0.62 0.37 X2 0.95 0.41...
Need help on number 3. Please use method of transformation. Explain if possible. (2)Suppose that X and X2 have joint pdf f(x1, x2) = 2 ,0<x1<x2 < 1, and zero otherwise. Compute the pdf of the random variable Y = (3)Let X-Exp(1) and Y-Exp(1). X and Y are independent. a. Find the pdf of A=(X+Y) and B=(x-7). b. Are A and B independent? C. Find the marginal of A and B
Let X1, X2, X3, X4 be random variables that are all independent of each other and have the same distribution, namely, P(X1 = 1) = 0.2, P(X1 = 0) = 0.8, and identically so for X2, X3, X4. Calculate the probability that P(X1 + X2 + X3 + X4 <= 3).
1. Suppose X,Y are random variables whose joint pdf is given by f(x, y) = 1/ x , if 0 < x < 1, 0 < y < x f(x, y) =0, otherwise . Find the covariance of the random variables X and Y . 2.Let X1 be a Bernoulli random variable with parameter p1 and X2 be a Bernoulli random variable with parameter p2. Assume X1 and X2 are independent. What is the variance of the random variable Y...
Suppose we have 5 independent and identically distributed random variables X1, X2, X3, X4,X5 each with the moment generating function 212 Let the random variable Y be defined as Y = Σ Find the joint probability that all Xi, (i-1,.5), are larger than 9.
Suppose we have 5 independent and identically distributed random variables X1, X2, X3, X4,X5 each with the moment generating function 212 Let the random variable Y be defined as Y = Σ Find the probability that Y is larger than 9. Prove that the distribution you use is the exact distribution, nota Central Limit Theorem approximation
a) An exponential random variable X has probability densityuntion: pdx]- forx20 Give a formula for the generating function of X b) A Beta random variable X has probability density function: pdfx] 6(1-x)x for0SxSI Give a formula for the generating function of X. (Tip: You can calculate: by first caleulatinge dx and differentiating with respect to t twice L.4) The generating function for the sum of independent random variables a) Given two independent random variables, X1 with generating function GX1[t] and...
please Solve the question with excel solver Solve the question with excel solver URBAN PLANNING - URBAN RENEWAL MODEL Example 2.4.6 on page 70 of Taha's book Decision variables: XI-Number of units of single-family homes x2 - Number of units of double-family homes x3 = Number of units of triple-family homes x4 - Number of units of quadruple-family homes xs = Number of old homes to be demolished XS Maximize z=1000 x1 + 1900 x2 +2700 x3 +3400 x4 Subject...