A fair 6-sided die is rolled, and then a coin with probability p of Heads is flipped as manytimes as the die roll says. (For example, if we roll a 3, then we flip the coin 3 times.) Let Xbe the result of the die roll and Y be the number of times the coin lands Heads.(a) Find the joint PMF of X and Y . Write the answer as a table (b) Find the marginal PMF of X.(c) Find the marginal PMF of Y .(d) Are X and Y independent? Why?(e) Find the conditional PMF of X given Y = 2.
A fair 6-sided die is rolled, and then a coin with probability p of Heads is flipped as manytimes as the die roll says. (For example, if we roll a 3, then we flip the coin 3 times.) Let Xbe the result of the die roll and Y be the number of times the coin lands Heads.(a) Find the joint PMF of X and Y . Write the answer as a table (b) Find the marginal PMF of X.(c) Find the marginal PMF of Y .(d) Are X and Y independent? Why?(e) Find the conditional PMF of X given Y = 2.
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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A fair 6-sided die is rolled, and then a coin with probability p of Heads is flipped as many
times as the die roll says. (For example, if we roll a 3, then we flip the coin 3 times.) Let X
be the result of the die roll and Y be the number of times the coin lands Heads.
(a) Find the joint PMF of X and Y . Write the answer as a table
(b) Find the marginal PMF of X.
(c) Find the marginal PMF of Y .
(d) Are X and Y independent? Why?
(e) Find the conditional PMF of X given Y = 2.
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