STATS 4-3 4-4

Question 1

STATS 4-3 4-4

compound event

Answer 1

any event combining two or more simple events

Question 2

STATS 4-3 4-4

Addition Rule:

P(A or B)

Answer 2

P(A or B)= P(A) + P(B) - P(A + B)

P(A + B) is the values that are in both sets of probability

Question 3

STATS 4-3 4-4

Disjoint

Answer 3

two events are disjoint if they cannot occur at the same time

Question 4

STATS 4-3 4-4

rule of complementary events

Answer 4

P(A) + P(Abar) = 1
P(Abar) = 1 - P(A)

P(A) = 1-P(Abar)

Question 5

STATS 4-3 4-4

two events A and B are independent

Answer 5

if the occurrence of one event does not affect the probability of the other

Question 6

STATS 4-3 4-4

P (A and B)

Answer 6

P (A and B) = P(A) * P(B/A)

Question 7

STATS 4-3 4-4

conditional probability

Answer 7

is a probability obtained with the additional information that some other event has already occurred.

Question 8

STATS 4-3 4-4

P(B|A)

Answer 8

P (B|A) = P(A and B)/P(A)