AP Statistics Unit 4

AP Statistics Unit 4

12th Grade

20 Qs

quiz-placeholder

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AP Statistics Unit 4

AP Statistics Unit 4

Assessment

Quiz

Mathematics

12th Grade

Hard

Created by

Anthony Clark

FREE Resource

20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

This data is normally distributed.  What percent of the data is in the shaded region?

68%

95%

99.7%

50%

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Jen’s commute to work requires that she take the Blue subway line, then transfer to the Red line. The length of the trip on the Blue line has a mean of 18 minutes with a standard deviation of 2 minutes. The Red line trip takes 12 minutes with a standard deviation of 1 minute. The waiting time between when she gets off the Blue line and her Red line train arrives has mean of 10 minutes and a standard deviation of 5 minutes. Assume (perhaps unrealistically) that these times are independent random variables. What are the mean and standard deviation of her entire commute?

Mean = 40 minutes; Standard deviation = 8 minutes

Mean = 40 minutes; Standard deviation = 5.48 minutes

Mean = 40 minutes; Standard deviation = 2.83 minutes

Mean = 30 minutes; Standard deviation = 5.48 minutes

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

What is the probability that a randomly selected girl speaks French?

2.14

.24

.4

.8571

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

In your top dresser drawer are 6 blue socks and 10 grey socks, unpaired and mixed up. One dark morning you pull two socks from the drawer (without replacement, of course!). What is the probability that the two socks match?Hint: try a tree diagram, but be careful with probabilities on the second column of branches.

0.075

0.375

0.450

0.500

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Is this a probability distribution?

No, the sum of p(x) does not equal 1.

Yes, all p(x) are between 0 and 1.

No, all p(x) are not between 0 and 1.

Yes, the sum p(x) is 1.

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

A

B

C

D

E

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Is this a probability distribution?

No

Yes

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