Probability

Question 1

probability

Answer 1

numerical measure of the likelihood that an event will occur

Question 2

P(A) = 1 means what?

Answer 2

that an event is certain to occur

Question 3

P(A)= 0 means what?

Answer 3

that an event is certain NOT to occur

Question 4

random experiment

Answer 4

process that generates well defined experimental outcomes ; on repetitions of experiment (trials), only one experimental outcome will occur purely by chance

Question 5

sample space

Answer 5

set of all experimental outcomes (denoted S)

Question 6

combination

Answer 6

way of selecting items from a collection, such that the order of selection doesn’t matter

Question 7

factorials

Answer 7

denoted (var!), counts the # of ways to order n objects without repetition

Question 8

permutation

Answer 8

arranging all members of a set into some sequence or order, and the order of selection matters - denoted P(N,n)

Question 9

major rules for assigning probabilities to outcomes

Answer 9

1. 0 <= P(A) <=1 must be true
2. for a set of k outcomes, P(A1) + P(A2)…P(Ak) must = 1