Conditional Probability

Sarah, Sammie, Victor, Vicki, Valerie are in a math group. Two students are randomly chosen to be co-leaders. What is the probability that both students' names begin with the letter V?

• 3/5 times 3/5 = 9/25

• 3/5 times 1/2 = 3/10

• 1/5 times 2/5 = 2/15

• 3/5 times 1/4 = 3/20

If you draw out a red marble, keep it, then draw out a blue marble, is it independent or dependent probability?

• Independent

• Dependent

What is the probability of picking a green marble, keeping it, then picking another green marble? (leave answer in fraction form in lowest terms)

• 9/49

• 1/7

• 3/14

• 6/42

A coin and a number cube with the numbers 1 through 6 are tossed. What is the probability of the coin showing tails and the number cube showing the number 3? (leave answer in fraction form in lowest terms)

• 1/12

• 1/4

• 1/8

• 1/2

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

• Independent Events

• Conditional Probability

• Dependent Events

• FPC

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

• mean

• median

• conditional probability

• probability

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

What fraction represents the conditional probability of P(C | F)? Do not convert your answer to a decimal. Just write the fraction.

Mathematical Equivalence

ON

Answer explanation

What fraction represents the conditional probability of P(C | F)?

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8 = # of Croc wearing female students

13 = # of female students

P(C | F) = 8/13

P( Sports Car | male)

Mathematical Equivalence

OFF