Question

Find the mean of the following probability distribution?

1	0.20
2	0.10
3	0.35
4	0.05
5	0.30

     

Place your answer, rounded to two decimal places, in the blank. When entering your answer do not use any labels or symbols other than a decimal point. Simply provide the numerical value. For example, 1.23 would be a legitimate entry

Answer 1

x	P(x)	x*P(x)
1	0.20	0.20
2	0.10	0.20
3	0.35	1.05
4	0.05	0.20
5	0.30	1.50
total	1.00	3.15

Hence the mean is 3.15

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