Exercise 3.1. Let X have possible values {1,2, 3, 4, 5} and probability mss function 1 3 4 px(x) | 1/7 1/14 3/14 2/7 2/7

A First Course in Probability (10th Edition)
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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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Find the variance of the random variable X from both Excercise 3.1 and 3.3

Exercise 3.1. Let X have possible values {1, 2, 3, 4, 5} and probability mass
function
1
3
4.
px(x) | 1/7 | 1/14 | 3/14 | 2/7 2/7
Transcribed Image Text:Exercise 3.1. Let X have possible values {1, 2, 3, 4, 5} and probability mass function 1 3 4. px(x) | 1/7 | 1/14 | 3/14 | 2/7 2/7
Exercise 3.3. Let X be a continuous random variable with density function
-3, r> 0
3e
f(r) =
0,
%3D
else.
Transcribed Image Text:Exercise 3.3. Let X be a continuous random variable with density function -3, r> 0 3e f(r) = 0, %3D else.
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