Here is an almost identical example:
A pair of dice (one red, one green) is cast 30 times, and on 4 of these occasions, the sum of the numbers facing up is 7. Let E be the event that the sum is 7. What is the relative frequency of E?.
Solution:
The relative frequency of E is given by
P(E) | = |
fr(E)
N | = |
4
30 | = |
2
15 | |
.1333 |
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