Chapter 2

Question 1

What is a random process?

Answer 1

a situation in which we know what outcomes could happen

Question 2

What is probability?

Answer 2

0 <= P(A) <= 1

Question 3

What is a disjoint (mutually exclusive) outcome?

Answer 3

outcomes that cannot happen at the same time.

ie: coin toss

Question 4

What is a non-disjoint outcome?

Answer 4

outcomes that can happen at the same time.

ie: a drawn card can both be an ace and hearts

Question 5

What is the probability that A or B occur?

Answer 5

The sum of their individual probabilities

Question 6

What is the probability that at least A or B ocurring

Answer 6

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

Question 7

What are the 3 properties of

Answer 7

1. The events listed must be disjoint
2. Each probability must be between 0 and 1
3. The probabilities must total 1

Question 8

What is a sample space

Answer 8

Collection of all possible outcomes of a trail

ie: what is the sample space for the gender of a kid ?
S = {M, F}

Question 9

What are complementary events?

Answer 9

two mutually exclusive events whose probabilities add up ti 1