Probability Flashcards
1
Q
if P(E), what is n(E)
A
the NUMBER of elements in set E
2
Q
what is n(s)
A
number of elements in sample space
3
Q
to visually solv multi stage events, use:
A
an array or tree diagram
4
Q
if events A and B are independent, then P(A and B)=
A
P(A*B)
5
Q
what indicates a complement events question?
A
the word “at least”
6
Q
what is the union symbol?
A
U
7
Q
what does U mean?
A
and/or
8
Q
what is the intersection symbol?
A
∩
9
Q
what does ∩ mean?
A
elements that are A AND B
10
Q
what does A given B mean?
A
it DECREASES THE SAMPLE SPACE, to letter A. It’s an example of conditional probability.
11
Q
what is the symbol for A given B?
A
A | B
12
Q
what are the symbols for not A
A
A’ / Ā
13
Q
A
