If it is 30,00 or more.. I think you would just add all of the probabilities.
.315+.180+.031
distribution of adjust gross income in individual federal income tax returns shows:
Income: 30-74, 75-199, more than 200
Probability: 0.315, 0.180, 0.031
1. What is the probability that a randomly chosen return shows an adjusted gross income of $30,000 or more?
2. Given that a return shows an income of at least $30,000, what is the conditional probability that the income is at lest $75,000?
2 answers
huj
1 answer