Binomial Distribution Flashcards
1
Q
When to use P(x) = (#nof scenarios) x (probability of a single scenario)?
A
When order doesn’t matter (known bc disjoint)
2
Q
Disjoint
A
Mutually Exclusive
3
Q
Conditions of binomial distribution
A
(1) independent trials
(2) # of trials n is fixed
(3) each trial has 2 outcomes (success/failure)
(4) each trial has same probability of success, p
4
Q
How do you find probability of at least 1 out of 10?
A
P( at least one occurrences ) = 1 - P( the probability the event never occurs)
if P of occurrence is 0.90, do 1 − 0.10^10
5
Q
What is the probability that at most 3 out of 10 randomly sampled American adults have not had chickenpox?
A
Use binomial distribution to see p(7) + p(8) + p(9) + p(10)
