fast please A random variable X is exponentially distributed with decay parameter 1/12 ( X~Exp(1/12) ). We randomly draw a sample of size 25. Let Xbar the random variable representing the averages of samples of size 25. The distribution of Xbar is: Group of answer choices N(12, 2.4) N(12, 12) Exp(1/12)

fast please A random variable X is exponentially distributed with decay parameter 1/12 ( X~Exp(1/12) ). We randomly draw a sample of size 25. Let Xbar the random variable representing the averages of samples of size 25. The distribution of Xbar is: Group of answer choices N(12, 2.4) N(12, 12) Exp(1/12)

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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For an initial investment of 100, an investment yields returns of Xi at the end of period i for i = 1,2, where X1 and X2 are independent normal random variables with mean 60 and variance 25. What is the probability the rate of return of this investment is greater than 10 percent?
For an initial investment of 100, an investment yields returns of Xi at the end of period i for i=1, 2 where X1 and X2 are independent normal random variables with mean 60 and variance 25. What is the probability the rate of return of this investment is greater than 10%?
1. Let X be a Poisson random variable with E[X] = ln2. Calculate E[cosπX]. 2. The number of home runs in a baseball game is assumed to have a Poisson distribution with a mean of 3. As a promotion, Mall A pledges to donate 10,000 dollars to charity for each home run hit up to a maximum of 3. Find the expected amount that the company will donate. Mall B also X dollars for each home run over 3 hits during the game, and X is chosen so that the Mall B's expected donation is the same as the Mall A's. Find X.
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