Homework Answers
Ans:
| x | f | x*f |
| 0 | 17 | 0 |
| 1 | 32 | 32 |
| 2 | 41 | 82 |
| 3 | 31 | 93 |
| 4 | 20 | 80 |
| 5 | 14 | 70 |
| 6 | 7 | 42 |
| 7 | 5 | 35 |
| Total | 167 | 434 |
a)E(X)=mu=434/167=2.60
b)Variance=2.60
standard deviation=sqrt(2.60)=1.612
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