SOLUTION: Find the mean of the probability distribution: X 0 1 2 3 4 P(X) 0.12 0.16 0.24 0.30 0.18 Round your answer to two decimal place as necessary.

Question 945555: Find the mean of the probability distribution:

X 0 1 2 3 4
P(X) 0.12 0.16 0.24 0.30 0.18
Round your answer to two decimal place as necessary.
Please explain answer. Thank you!
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!

X           0     1       2      3       4 
P(X)       0.12   0.16   0.24   0.30    0.18

Multiply each X value by its corresponding P(X) value

0*0.12 = 0
1*0.16 = 0.16
2*0.24 = 0.48
3*0.30 = 0.90
4*0.18 = 0.72

Now add up the products:

0+0.16+0.48+0.90+0.72 = 2.26

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So the mean is 2.26
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