. Suppose the probability of selecting a number from the interval [0, 2] is given by f(x) = Cx. (a) Find the value of C so that this is a probability distribution. (b) Find the probability that the given number is in the interval [0,1]. Now find the probability that the selected number is in the interval [1, 2]. The answers differ. Why? (c) If X (x) = x is the random variable giving the value of the selected number, what is E(X)? The Var(X)?

College Algebra
7th Edition
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter9: Counting And Probability
Section9.3: Binomial Probability
Problem 2E: If a binomial experiment has probability p success, then the probability of failure is...
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10. Suppose the probability of selecting a number from the interval [0, 2] is given
by f(x) = Cx.
(a) Find the value of C so that this is a probability distribution.
(b) Find the probability that the given number is in the interval [0,1]. Now find
the probability that the selected number is in the interval [1, 2]. The answers
differ. Why?
(c) If X (x) = x is the random variable giving the value of the selected number,
what is E(X)? The Var(X)?
Transcribed Image Text:10. Suppose the probability of selecting a number from the interval [0, 2] is given by f(x) = Cx. (a) Find the value of C so that this is a probability distribution. (b) Find the probability that the given number is in the interval [0,1]. Now find the probability that the selected number is in the interval [1, 2]. The answers differ. Why? (c) If X (x) = x is the random variable giving the value of the selected number, what is E(X)? The Var(X)?
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