5. probability Flashcards
(11 cards)
1
Q
experiment def
A
repeatable process that gives rise to a number of outcomes
2
Q
event def
A
collection of one or more outcome
3
Q
sample space def
A
is a set of all possible outcomes
4
Q
intersection
A
A and B
between two circles
5
Q
union
A
A or B
both circles
6
Q
how to calculate not a
A
1- P(a)
one minus probability of a
7
Q
mutually exclusive def
A
when events have no outcome in common
8
Q
mutually exclusive events calculations
A
p(A or B) = P(A) + P(B)
9
Q
independent events calculation
A
P(A and B) = P(A) x P(B)
10
Q
events a and b are mutually exclusive P(a) = 0.2 and P(B) = 0.5
find p(a or b)
p(a but not b)
A
- 0.7
- 0.2
11
Q
statistically independent calculation
A
p(a and b) = p(A) x p(b)
