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The discrete random variable X has the probability distribution given by: -4 -2 2 4 P(X= x) 0.3 3k k 0.35 3k a. Determine the following probability: P(X=-2) = ? Answer in exact fraction or exact decimals b. What is the expected value of the random variable X? Answer in exact fraction or exact decimals c. What is the variance of the random variable X? Answer in exact fraction or exact decimals d. Find the variance of the random variable Y, where Y = -2X – Answer in exact fraction or exact decimals

The discrete random variable X has the probability distribution given by: -4 -2 2 4 P(X= x) 0.3 3k k 0.35 3k a. Determine the following probability: P(X=-2) = ? Answer in exact fraction or exact decimals b. What is the expected value of the random variable X? Answer in exact fraction or exact decimals c. What is the variance of the random variable X? Answer in exact fraction or exact decimals d. Find the variance of the random variable Y, where Y = -2X – Answer in exact fraction or exact decimals

A First Course in Probability (10th Edition)
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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The discrete random variable X has the probability distribution given by: -4 -2 2 4 6 P(X = x) 0.3 3k k 0.35 3k a. Determine the following probability: P(X=-2) = ? Answer in exact fraction or exact decimals b. What is the expected value of the random variable X? Answer in exact fraction or exact decimals c. What is the variance of the random variable X? Answer in exact fraction or exact decimals d. Find the variance of the random variable Y, where Y = -2X – Answer in exact fraction or exact decimals Submit You have used 0 of 2 attempts Save
Transcribed Image Text:The discrete random variable X has the probability distribution given by: -4 -2 2 4 6 P(X = x) 0.3 3k k 0.35 3k a. Determine the following probability: P(X=-2) = ? Answer in exact fraction or exact decimals b. What is the expected value of the random variable X? Answer in exact fraction or exact decimals c. What is the variance of the random variable X? Answer in exact fraction or exact decimals d. Find the variance of the random variable Y, where Y = -2X – Answer in exact fraction or exact decimals Submit You have used 0 of 2 attempts Save
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