Let X be the number of packages being mailed by a randomly selected customer at a certain shipping facility. Suppose the distribution of X is as follows: 1. 2. 3. X 1 2 3 4 p(x) 0.4 0.3 0.2 0.1 Find the mean E(X) and the variance V(X). Consider a random sample of size 2, and let M be the average number of packages shipped among the two observations. Obtain the probability distribution of M. Consider a random sample of size 100, and let X be the aver- ber of packages shipped from the sample. Calculate the prob- ability that P(X <2.15).

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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Let X be the number of packages being mailed by a randomly selected
customer at a certain shipping facility. Suppose the distribution of X is as
follows:
1.
2.
3.
X
1 2 3 4
p(x) 0.4 0.3 0.2 0.1
Find the mean E(X) and the variance V(X).
Consider a random sample of size 2, and let M be the average
number of packages shipped among the two observations. Obtain the
probability distribution of M.
Consider a random sample of size 100, and let X be the aver-
ber of packages shipped from the sample. Calculate the prob-
ability that P(X <2.15).
Transcribed Image Text:Let X be the number of packages being mailed by a randomly selected customer at a certain shipping facility. Suppose the distribution of X is as follows: 1. 2. 3. X 1 2 3 4 p(x) 0.4 0.3 0.2 0.1 Find the mean E(X) and the variance V(X). Consider a random sample of size 2, and let M be the average number of packages shipped among the two observations. Obtain the probability distribution of M. Consider a random sample of size 100, and let X be the aver- ber of packages shipped from the sample. Calculate the prob- ability that P(X <2.15).
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