Discrete Probability (Geometric) Flashcards
1
Q
What are the four traits of a geometric distribution?
A
1) only 2 possible outcomes
2) independent of each other
3) probability of success is always the same
4) variable of interest is the number of trials before success
2
Q
Find the probability of getting a success on the 5th trial with 10% chance of success.
A
(1-0.1)^4•0.1
3
Q
what is the difference between geometric cdf and geometric pdf?
A
cdf= winning on a certain trial pdf= winning on or before a certain trial
4
Q
What is the probability that is the probability of success is 25% and you have to find the probability that you get zero successes the first 10 trials?
A
1-geometric cdf (.25,10) =.0563
