(a) Suppose that 20 % persons in a large group of people are obese. If persons are checked one by one, what is the probability that the 10th person is the third obese person? (b) Let a discrete random variable X have the following PMF: p(x) = k (-). for x = 0,1,2, . .; 0, otherwise. Find k. (c) In a class of 6 students, what is the probability that at least one was born in January?
(a) Suppose that 20 % persons in a large group of people are obese. If persons are checked one by one, what is the probability that the 10th person is the third obese person? (b) Let a discrete random variable X have the following PMF: p(x) = k (-). for x = 0,1,2, . .; 0, otherwise. Find k. (c) In a class of 6 students, what is the probability that at least one was born in January?
A First Course in Probability (10th Edition)
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ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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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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Transcribed Image Text:(a) Suppose that 20 % persons in a large group of people are obese. If persons are
checked one by one, what is the probability that the 10th person is the third obese
person?
(b) Let a discrete random variable X have the following PMF:
p(x) = k () , for x = 0,1,2,
0, otherwise. Find k.
..:
(c) In a class of 6 students, what is the probability that at least one was born in January?
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