Round all of your final answers to four decimal places if necessary. The probability distribution of random variable X is given below: X 2 4 P(x) 0.2 0.8 A second random variable is defined as follows: Y = 2X + 1. A third random variable is defined as follows: Z = X2 – 1. a) What is μX? b) What is (standard deviation)y2 c) What is (standard deviation)z2

Round all of your final answers to four decimal places if necessary. The probability distribution of random variable X is given below: X 2 4 P(x) 0.2 0.8 A second random variable is defined as follows: Y = 2X + 1. A third random variable is defined as follows: Z = X2 – 1. a) What is μX? b) What is (standard deviation)y2 c) What is (standard deviation)z2

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

The joint probability distribution of the random variables X and Y is given below: ? (?, ?) = ???, 0 <? <2, 0 <? <? 0, other a. Find the value of the constant. b. Calculate and interpret the covariance and correlation of the X and Y random variables. c. Calculate the expected value and variance of the random variable ? = 2? − 3? + 2.
The probability distribution of random variable X is defined as follows: X 0 1 2 3 4 Probability 0 0.3 0.1 0.3 0.3 Find the expected value and the standard deviation of X.
Find the variance for the probability distribution X 4 0 1 2 3 P(X=x) 0.04 0.18 0.34 0.23 0.21 Select one: a. 3.79 b. 1.59 c. 1.26 d. 1.12
Data were collected from a survey given to graduating college seniors on the number of times they had changed majors. From that data, a probability distribution was constructed. The random variable X is defined as the number of times a graduating senior changed majors. It is shown below: 1 2 3 5 6 7 8 P(X = x) 0.195 0.183 0.294 0.179 0.098 0.034 0.012 0.003 0.002 a. What is the probability that a randomly selected student changed his or her major at least once? b. What is the probability that a randomly selected student changed his or her major at most twice? c. Given that a randomly selected person did change majors, what is the probability that he or she changed majors more than three times? Check Answer
Subject; algebra
Rem. A concerned parents group determined the number of commercials shown in each of the five children's programs over a period of time. Num of Commercials P(X = x 1.824 0.078 2.081 0.05 2.338 0.101 2.595 0.134 2.852 0.07 3.109 0.567 Consider the probability distribution table above. Determine the following: (a) Determine the mean = (b) Determine the Standard Deviation
A particular lake is known to be one of the best places to catch a certain type of fish. In this table, x= number of fish caught in a 6-hour period. The percentage data are the percentages of fishermen who caught x fish in a 6-hour period while fishing from shore. 45% 79% at least 4 1% 35% 12% A USE SALT (b) Find the probability that a fisherman selected at random fishing from shore catches one or more fish in a 6-hour period. (Round your answer to two decimal places.) 66 (c) Find the probability that a fisherman selected at random fishing from shore catches two or more fish in a 6-hour period. (Round your answer to two decimal places.) 21 (d) Compute , the expected value of the number of fish caught per fisherman in a 6-hour period (round at least 4 to 4). (Round your answer to two decimal places.) H= 87 x fish (e) Compute o, the standard deviation of the number of fish caught per fisherman in a 6-hour period (round at least 4" to 4). (Round your answer to three decimal places.) x…
Solve for (D)
The probability distribution of random variable, X, is defined as follows: X 0 1 2 3 4 Probability 0 .3 .1 .3 .3 The P(X = 0) =?
A fitness center bought a new exercisemachine called the Mountain Climber. Theydecided to keep track of how many people used themachine over a 3-hour period. Find the mean, variance,and standard deviation for the probability distribution.Here X is the number of people who usedthe machine. X 0 1 2 3 4 P(X) 0.1 0.2 0.4 0.2 0.1
Data were collected from a survey given to graduating college seniors on the number of times they had changed majors. From that data, a probability distribution was constructed. The random variable X is defined as the number of times a graduating senior changed majors. It is shown below: xx 0 1 2 3 4 5 6 7 8 P(X=x)P(X=x) 0.274 0.292 0.134 0.156 0.088 0.034 0.018 0.003 0.001 What is the probability that a randomly selected student changed his or her major at least once? What is the probability that a randomly selected student changed his or her major at most twice? Given that a randomly selected person did change majors, what is the probability that he or she changed majors more than three times?