1. A random variable X has a probability distribution function S(x) given by X-1 S(x) =- X= 2,3,4,5,6 where k is a constant. k a) Find the value of k. b) Construct the cumulative distribution function of X. Find P( 3 SXS5)

A First Course in Probability (10th Edition)
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ISBN:9780134753119
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Chapter1: Combinatorial Analysis
Section: Chapter Questions
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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No.1

defective
tubes produced by machines A, B, C are 6%, 8% and 12%, respectively.
Draw a tree diagram showing the outcomes and their probabilities, and
calculate the probability that a tube selected by random is defective.
Calculate the probability that a tube selected at random comes from machine
A given that it is not defective.
a)
b)
SELECTED EXERCISE 7B
1.
A random variable X has a probability distribution function S(x) given by
X-1
S(x)=
x 2,3,4,5,6 where k is a constant.
%3D
a) Find the value of k.
Construct the cumulative distribution function of X.
b)
c)
Find P( 3 sX5)
Find E(X), Var(X), Hence determine E(7-2X) and Var(7-2X)
d)
Transcribed Image Text:defective tubes produced by machines A, B, C are 6%, 8% and 12%, respectively. Draw a tree diagram showing the outcomes and their probabilities, and calculate the probability that a tube selected by random is defective. Calculate the probability that a tube selected at random comes from machine A given that it is not defective. a) b) SELECTED EXERCISE 7B 1. A random variable X has a probability distribution function S(x) given by X-1 S(x)= x 2,3,4,5,6 where k is a constant. %3D a) Find the value of k. Construct the cumulative distribution function of X. b) c) Find P( 3 sX5) Find E(X), Var(X), Hence determine E(7-2X) and Var(7-2X) d)
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