1. Suppose that X and Y have the following joint probability distribution Y 1 2 3 1 0.05 0.05 0.1 0.05 0.1 0.35 3 0.2 0.1 A. Evaluate the marginal distribution of X B. Evaluate the marginal distribution of Y C. P (x= 2) & P(y=2)

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Chapter1: Combinatorial Analysis
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1. Suppose that X and Y have the following joint probability distribution
Y
1
2
1
0.05
0.05
0.1
2
0.05
0.1
0.35
3
0.2
0.1
A. Evaluate the marginal distribution of X
B. Evaluate the marginal distribution of Y
C. P (x= 2) & P(y=2)
D. The conditional distribution of Y given x=3
E. The conditional distribution of X given Y=1
F. P( x=1/ y=2)
G. Determine if the two random variables are statistically dependent or independent
2. A privately owned liquor store operates a drive up facility and a walk-in facility. On a randomly selected day, let
X and Y, respectively be the proportions of the time that the drive-up and walk-in facilities are in use and
suppose that the joint density function of these random variables is given by
(х + 2y),
0< x<1,0 < y<1
fx =
elsewhere
Find PG < x < & y <
а.
b. Find the marginal density of X
С.
Find the marginal density of Y
d. Find the probability that the drive-up facility is busy less than one-half of the time
е.
Find the probability that the walk-in facility is used more than two-thirds of the time
y
2
f.
Find P(
Transcribed Image Text:1. Suppose that X and Y have the following joint probability distribution Y 1 2 1 0.05 0.05 0.1 2 0.05 0.1 0.35 3 0.2 0.1 A. Evaluate the marginal distribution of X B. Evaluate the marginal distribution of Y C. P (x= 2) & P(y=2) D. The conditional distribution of Y given x=3 E. The conditional distribution of X given Y=1 F. P( x=1/ y=2) G. Determine if the two random variables are statistically dependent or independent 2. A privately owned liquor store operates a drive up facility and a walk-in facility. On a randomly selected day, let X and Y, respectively be the proportions of the time that the drive-up and walk-in facilities are in use and suppose that the joint density function of these random variables is given by (х + 2y), 0< x<1,0 < y<1 fx = elsewhere Find PG < x < & y < а. b. Find the marginal density of X С. Find the marginal density of Y d. Find the probability that the drive-up facility is busy less than one-half of the time е. Find the probability that the walk-in facility is used more than two-thirds of the time y 2 f. Find P(
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