Probability Distributions for Discrete Random Variables

Statistics
Tutor: None Selected Time limit: 1 Day

Sep 29th, 2015

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a. p(x>3)

=0.12+0.04

=0.16

b. p(x=0,1,2)

=p(x=2)

=0.48

Mean

=(2*0.48)+(3*0.36)+(4*0.12)+(5*0.04)

=2.72

Variance

=0.248832+0.028224+0.196608+0.207936

=0.6816

std. deviation = square root of variance

=0.82559

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Sep 29th, 2015

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