7. A sample of college students were asked how much pizza they bought in a week....
7. A sample of college students were asked how much pizza they bought in a week. The results were put in a probability distribution table.
a) Find P (x = 4). Find P (x < 2).
b) Find the expected value of the number of pizzas in a week. Interpret the answer.
|
x |
P (x) |
|
0 |
0.10 |
|
1 |
0.34 |
|
2 |
0.23 |
|
3 |
0.15 |
|
4 |
0.18 |
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