10 Set A consists of the ten digits 0, 0, 0, 0, 0, 0, 2, 2, 2, 4. Set B consists of the seven digits 0, 0, 0, 0, 2, 2, 2. One digit is chosen at random from each set. The random variable X is defined as the sum of these two digits. i Show that P(X = 2) = ÷. ii Tabulate the probability distribution of X. iii Find E(X) and Var(X). butionsand iv Given that X = 2, find the probability that the digit chosen from set A was 2. %3D

A First Course in Probability (10th Edition)
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Chapter1: Combinatorial Analysis
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10 Set A consists of the ten digits 0, 0, 0, 0, 0, 0, 2, 2, 2, 4.
Set B consists of the seven digits 0, 0, 0, 0, 2, 2, 2.
Theo
One digit is chosen at random from each set. The random variable X is defined as the sum of these
two digits.
3
i Show that P(X = 2) =
ii Tabulate the probability distribution of X.
iii Find E(X) and Var(X).
butions
iv Given that X = 2, find the probability that the digit chosen from set A was 2.
Transcribed Image Text:10 Set A consists of the ten digits 0, 0, 0, 0, 0, 0, 2, 2, 2, 4. Set B consists of the seven digits 0, 0, 0, 0, 2, 2, 2. Theo One digit is chosen at random from each set. The random variable X is defined as the sum of these two digits. 3 i Show that P(X = 2) = ii Tabulate the probability distribution of X. iii Find E(X) and Var(X). butions iv Given that X = 2, find the probability that the digit chosen from set A was 2.
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