AP Statistics Unit 4

The American Red Cross says that about 11% of the U.S. population has Type B blood. A blood drive is being held at your school. What is the probability that at least 2 of the first 10 blood donors has Type B blood? 

• 0.088

• 0.697

• 0.214

• 0.303 

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

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

• .7273

• .4

• .16

• .22

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

• .525

• .4627

• .6774

• .3143

Given the following VENN Diagram answer the following.

P( A | B )

• 2

• 2/3

• 3/2

• .8

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

In which of the following situations would it be appropriate to use a Normal distribution to approximate probabilities for a binomial distribution with the given values of n and p?

• n = 10, p = 0.5

• n = 40, p = 0.88

• n = 100, p = 0.2

• n = 100, p = 0.99

• n = 1000, p = 0.003

The table above shows a television station's advertisement sales. The distribution of sales for one 24-hour day is given. Solve for the standard deviation. Round to the nearest hundredth.

• 35.76

• 268.1

• 16.3

• 1279.35

Two fair dice are rolled and the numbers that appear are added. What is the probability that this sum is exactly 3?

• 1/12

• 1/18

• 1/4

• 1/6