A discrete random variable X has probability distribution given by 1 4 P(X=x) 0.20 0.25 0.40 a 0.05 Find (a) the value of a (b) P(X < 2) (c) P(1
A discrete random variable X has probability distribution given by 1 4 P(X=x) 0.20 0.25 0.40 a 0.05 Find (a) the value of a (b) P(X < 2) (c) P(1
College Algebra
7th Edition
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter9: Counting And Probability
Section9.4: Expected Value
Problem 1E: If a game gives payoffs of $10 and $100 with probabilities 0.9 and 0.1, respectively, then the...
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Transcribed Image Text:TUTORIAL SHEET # 3
1.
A discrete random variable X has probability distribution given by
4
P(X =x)
0.20
0.25
0.40
0.05
a
Find
the value of a
P(X < 2)
(a)
(d)
(g)
(b)
(e)
(c)
(f)
P(1 <X< 3)
V(X)
P(2 < X < 5)
E(X)
the standard deviation of X.
The demand for a product of Gippsland industries varies greatly from mont
Based on the past two years of data, the following probability distribution
company's monthly demand
2.
Unit demand
300
400
500
600
Probability
0.20
0.30
0.35
0.15
%23
N N
25
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