Question 253864
(a) Calculate the mean and standard deviation. 
x..... 0.. 1.. 2.. 3.. 4.. 5 Total
P(x) .05 .30 .25 .20 .15 .05 1.00

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I used a TI calculator.
The results:
mean::: 2.7123...
std:::: 1.2329

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Cheers,
Stan H.