03

Question 1

When a>0 where is the minimum of a quadratic function

Answer 1

-b/2a

Question 2

When a<0 where is the maximum of a quadratic function

Answer 2

-b/2a

Question 3

What does conditional probability mean

Answer 3

What is the probability of event A given that event B has occurred?

Question 4

What is the conditional probability formula

Answer 4

P(AIB) = P(AnB) / P(B)

Question 5

When are two events independent

Answer 5

Two events A and B are independent if P(A|B) =P(A) Two events A and B are independent if P(B|A) =P(B) Two events A and B are independent if P(A∩B) =P(A)P(B)

Question 6

What is the formula for the probability of two events

Answer 6

P(AUB) = P(A) + P(B) - P(AnB)

Question 7

What is the formula for the probability of the intersection of two events

Answer 7

P(AnB) = P(A)*P(BIA)
or if both events are mutually exclusive P(A) + P(B)

Question 8

What is the formula for the intersection of two events f they are independent

Answer 8

P(A)*P(B)