The joint probability function of two discrete random variables X and X is given by f(x, y) = cry for x = 1.2.3 and y= 1, 2, 3, and equals zero otherwise. Find (a) the constant c. (b) P(X= 2.Y= 3). (c) P(1 ≤X ≤ 2. Y≤ 2). (d) P(X2), (e) P(<2). (f) P(X= 1). (g) P(Y = 3).

College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter8: Sequences, Series, And Probability
Section8.7: Probability
Problem 39E: Assume that the probability that an airplane engine will fail during a torture test is 12and that...
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The joint probability function of two discrete random variables X and X is given by f(x, y) = cxy for x = 1, 2, 3
and y = 1, 2, 3, and equals zero otherwise. Find (a) the constant c, (b) PCX = 2, Y = 3), (c) P(1 ≤X ≤ 2, Y ≤ 2),
(d) P(X22), (e) P(Y < 2). (f) P(X = 1), (g) P(Y = 3).
Let X and Y be continuous random variables having joint density function
[c(x² + y²)
10
**
0≤x≤ 1,0 ≤ y ≤ 1
otherwise
Determine (a) the constant c. (b) P(X<Y > ). (c) P < X < ). (d) P(Y < ), (e) whether X and Y are
independent.
Let X and Y be continuous random variables having joint density function
[c(x² + y²)
to
0
f(x, y) =
S.S.
0≤x≤ 1,0 ≤ y ≤ 1
otherwise
By dx dy
Determine (a) the constant c. (b) P(X<Y > ¹). (c) P ( < X < ³), (d) P(Y < ¹), (e) whether X and Y are
independent.
dix dy
C
CX
Transcribed Image Text:The joint probability function of two discrete random variables X and X is given by f(x, y) = cxy for x = 1, 2, 3 and y = 1, 2, 3, and equals zero otherwise. Find (a) the constant c, (b) PCX = 2, Y = 3), (c) P(1 ≤X ≤ 2, Y ≤ 2), (d) P(X22), (e) P(Y < 2). (f) P(X = 1), (g) P(Y = 3). Let X and Y be continuous random variables having joint density function [c(x² + y²) 10 ** 0≤x≤ 1,0 ≤ y ≤ 1 otherwise Determine (a) the constant c. (b) P(X<Y > ). (c) P < X < ). (d) P(Y < ), (e) whether X and Y are independent. Let X and Y be continuous random variables having joint density function [c(x² + y²) to 0 f(x, y) = S.S. 0≤x≤ 1,0 ≤ y ≤ 1 otherwise By dx dy Determine (a) the constant c. (b) P(X<Y > ¹). (c) P ( < X < ³), (d) P(Y < ¹), (e) whether X and Y are independent. dix dy C CX
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