Conditional Probability

If two events are independent, the P(A|B) = P(B).

• True

• False

Classify the events as independent or dependent.

• independent events

• dependent events

Worst President: In a sample of 1446 US voters, 188 said Nixon was the worst president since WWII. Three registered voters are selected at random. Find the probability that all 3 say Nixon is the worst president.

• 0.002

• 0.017

• 0.390

• 0.240

Lottery Tickets: 49% of US adults have purchase a state lottery ticket in the past year. Of these 49%, about 27.5% have an income less than $36,000/year. Find the probability that a randomly selected adult has purchase a lottery ticket and has an income less than $36,000.

• 0.135

• 0.765

• 0.176

• 0.240

the likelihood of an event or outcome occurring, based on the occurrence of a previous event or outcome

• mean

• median

• conditional probability

• probability

Mathematical Equivalence

ON

-the likelihood of an event or outcome occurring, based on the occurrence of a previous event or outcome

• mean

• median

• conditional probability

• probability

What is the probability that a female is chose given they like a Toyota?

• .525

• .4627

• .6774

• .3143

The probability of an event occuring given that another event has already occured is called

• Independent Events

• Conditional Probability

• Dependent Events

• FPC

P(C | B)

Mathematical Equivalence

ON