Question

The table gives a set of outcomes and their probabilities. Let A be the event "the outcome is less than or equal to 3". Find P(A). Outcome Probability 1 0.004 2 0.221 3 0.117 4 0.332 5 0.028 6 0.002 7 0.003 8 0.176 9 0.01 10 0.107

Answer 1

We need to find the following probability:

P(X <= 3)

And from the info given we have:

P(X<=3) =P(X=1)+P(X=2) +P(X=3)

P(X<=3) =0.004+0.221+0.117 = 0.342