A market researcher wants to determine whether a new model of a personal computer that had been advertised on a late-night talk show had achieved more brand-name recognition among people who watched the show regularly than among people who did not. After conducting a survey, it was found that 15% of all people both watched the show regularly and could correctly identify the product. Also, 16% of all people regularly watched the show and 45% of all people could correctly identify the product. Define a pair of random variables as follows:X = 1   if regularly watch the show         X = 0     otherwiseY = 1   if product correctly identified     Y = 0     otherwisea. Find the joint probability distribution of X and Y.b. Find the conditional probability distribution of Y, given X = 1.c. Find and interpret the covariance between X and Y.

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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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 market researcher wants to determine whether a new model of a personal computer that had been advertised on a late-night talk show had achieved more brand-name recognition among people who watched the show regularly than among people who did not. After conducting a survey, it was found that 15% of all people both watched the show regularly and could correctly identify the product. Also, 16% of all people regularly watched the show and 45% of all people could correctly identify the product. Define a pair of random variables as follows:

X = 1   if regularly watch the show         X = 0     otherwise
Y = 1   if product correctly identified     Y = 0     otherwise

a. Find the joint probability distribution of X and Y.
b. Find the conditional probability distribution of Y, given X = 1.
c. Find and interpret the covariance between X and Y.

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