a. Calculate the variance and standard deviation of the random variable. 6, = (Round to two decimal places as needed.) b) Let y = x+2. Calculate the variance and standard deviation of the random variable y. oy (Round to two decimal places as needed.) c) Let z= 2x. Calculate the variance and standard deviation of the random variable z. (Round to two decimal places as needed.) d. From your calculations in part a and part b, indicate the effect that adding a constant to a random variable has on its variance and standard deviation. OA. Adding a constant, c, decreases its variance by a multiple of c and decreases its standard deviation by a multiple of c. O B. Adding a constant, c, increases its variance by a multiple of c and increases its standard deviation by a multiple of c O C. Adding a constant, c, to a random variable has no effect on its variance and standard deviation.

a. Calculate the variance and standard deviation of the random variable. 6, = (Round to two decimal places as needed.) b) Let y = x+2. Calculate the variance and standard deviation of the random variable y. oy (Round to two decimal places as needed.) c) Let z= 2x. Calculate the variance and standard deviation of the random variable z. (Round to two decimal places as needed.) d. From your calculations in part a and part b, indicate the effect that adding a constant to a random variable has on its variance and standard deviation. OA. Adding a constant, c, decreases its variance by a multiple of c and decreases its standard deviation by a multiple of c. O B. Adding a constant, c, increases its variance by a multiple of c and increases its standard deviation by a multiple of c O C. Adding a constant, c, to a random variable has no effect on its variance and standard deviation.

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Description: Data is in one image and question in the other. Thanks! :) Consider the discrete probability distribution shown to the right, and complete parts a through e below.a. Calculate the variance and standard deviation of the random variable.(Round to two

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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