Each throw of an unfair die lands on each of the odd numbers 1, 3, 5 with probability C and on each of the even numbers with probability 2 a. Find C. b. Suppose that the die is tossed. Let X equal 1 if the result is an even number, and let it be 0 otherwise. Also, let Y equal 1 if the result is a number greater than three and let it be 0 otherwise. Find the joint probability mass function of X and Y. Suppose now that 12 independent tosses of the die are made. c. Find the probability that each of the six outcomes occurs exactly twice. d. Find the probability that 4 of the outcomes are either one or two, 4 are either three or four, and 4 are either five or six. e. Find the probability that at least 8 of the tosses land on even numbers.
Each throw of an unfair die lands on each of the odd numbers 1, 3, 5 with probability C and on each of the even numbers with probability 2 a. Find C. b. Suppose that the die is tossed. Let X equal 1 if the result is an even number, and let it be 0 otherwise. Also, let Y equal 1 if the result is a number greater than three and let it be 0 otherwise. Find the joint probability mass function of X and Y. Suppose now that 12 independent tosses of the die are made. c. Find the probability that each of the six outcomes occurs exactly twice. d. Find the probability that 4 of the outcomes are either one or two, 4 are either three or four, and 4 are either five or six. e. Find the probability that at least 8 of the tosses land on even numbers.
Solution Summary: The author explains that the sum of probabilities must be equal to 1. The joint probability mass function of two discrete random variables X and
Each throw of an unfair die lands on each of the odd numbers 1, 3, 5 with probability C and on each of the even numbers with probability 2
a. Find C.
b. Suppose that the die is tossed. Let X equal 1 if the result is an even number, and let it be 0 otherwise. Also, let Y equal 1 if the result is a number greater than three and let it be 0 otherwise. Find the joint probability mass function of X and Y. Suppose now that 12 independent tosses of the die are made.
c. Find the probability that each of the six outcomes occurs exactly twice.
d. Find the probability that 4 of the outcomes are either one or two, 4 are either three or four, and 4 are either five or six.
e. Find the probability that at least 8 of the tosses land on even numbers.
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