Let x represent the number of times a customer visits a grocery store in a 1-week period. Assume this is the probability distribution of x. Find the expected value of x, the average number of times a customer visits the store. X 0 1 2 3 P(x) 0.1 0.4 0.4 0.1
Let x represent the number of times a customer visits a grocery store in a 1-week period. Assume this is the probability distribution of x. Find the expected value of x, the average number of times a customer visits the store. X 0 1 2 3 P(x) 0.1 0.4 0.4 0.1
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Let x represent the number of times a customer visits a grocery store in a 1-week period. Assume this is the probability distribution of x. Find the
X |
0 |
1 |
2 |
3 |
P(x) |
0.1 |
0.4 |
0.4 |
0.1 |
You know only that your colleague has three children. Suppose the chance of a child being a girl is ½. Let x be the number of girls in three children.
(a) Construct a probability distribution.
(b) Construct a histogram.
(c) What is the probability of having all three girls?
(d) Find the expected value of having girls in three children.
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