AP Statistics Probability

What is P(Red given blue)?

• 50%

• 26.7%

• 57.1%

• 46.7%

What is the probability that the person picked will be a boy given they speak german? 

• .7273

• .4

• .16

• .22

P(Shorts and Shoes):

• 1/6

• 6/16

• 22/16

• 6/22

P(Freshman or Pizza):

• 27/50

• 4/50

• 3/50

• 2/11

What is P(Foreign language | Sport)?

• 14/27

• 7/12

• 23/47

• 37/47

Given P(A) = .8 and P( B| A) = .3, find P( A and B).

• 2.6

• .12

• .24

• .38

If A and B are independent, which statement must be true?

• P(A∩B) = 0

• P(A|B) = P(A)

• P(A∪B) = 0

• P(A) + P(B) = 1

When picking two cards from a pack (replacing the card and shuffling after the first pick) the two outcomes are:

• Dependent

• Independent

When picking two cards from a pack (without putting the first one back) the two outcomes are:

• Dependent

• Independent

Mary is a good student. The overall probability that she studies is 0.80. The probability that she studies and that she passes her test is 0.60. What is the probability that she passes given that she studies?

• 0.75

• 0.25

• 0.20

• 0.60