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Probability distribution

label Mathematics
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Using probability distribution liste

x.       0.   1.    2.     3

P(x).   0.2.   0.1.   0.3.     0.4

A- find the mean ,variance,and standard deviation 

B- what is the probability that p(x is at least 1)?

C-what is the probability that p(x is less than 3)?

Mar 22nd, 2015

A-  mean = 1.9 , variance = 1.29 , standard deviation = 1.1358

B- p(x is at least 1) = 0.1+0.3+0.4 = 0.8

C- p(x is less than 3) = 0.2+0.1+0.3 = 0.6

Mar 22nd, 2015

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Mar 22nd, 2015
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Mar 22nd, 2015
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