B-3. You are playing a game with a friend. Each of you randomly pick a number from a set of five numbers, {1,2,3,4,5}. Define X as the sum of the two numbers that you and your friend pick. (a) Write down the probability distribution of X. (b) Calculate the expected value and standard deviation of X. (c) What is the probability that 4

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section: Chapter Questions
Problem 76RE
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B-3. You are playing a game with a friend. Each of you randomly pick a number from a set of
five numbers, {1,2,3,4,5}. Define X as the sum of the two numbers that you and your friend
pick.
(a) Write down the probability distribution of X.
(b) Calculate the expected value and standard deviation of X.
(c) What is the probability that 4<XS8?
(d) What is the probability that the number you pick is the same as your friend's number?
Transcribed Image Text:B-3. You are playing a game with a friend. Each of you randomly pick a number from a set of five numbers, {1,2,3,4,5}. Define X as the sum of the two numbers that you and your friend pick. (a) Write down the probability distribution of X. (b) Calculate the expected value and standard deviation of X. (c) What is the probability that 4<XS8? (d) What is the probability that the number you pick is the same as your friend's number?
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