AP Stat Semester

AP Stat Semester

12th Grade

20 Qs

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AP Stat Semester

AP Stat Semester

Assessment

Quiz

Mathematics

12th Grade

Practice Problem

Hard

Created by

Anthony Clark

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20 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

The probability distribution for the number of heads in four tosses of a coin is given above. The probability of getting at least one tail in four tosses of a coin is

15/16

4/16

1/16

14/16

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

According to the U.S. Census, the proportion of adults in a certain county who owned their own home was 0.71. An SRS of 100 adults in a certain section of the county found that 65 owned their home. Which one of the following represents the approximate probability of obtaining a sample of 100 adults in which fewer than 65 own their home, assuming that this section of the county has the same overall proportion of adults who own their home as does the entire county?

a

b

c

d

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which one of the following would be a correct interpretation if you have a z-score of +2.0 on an exam?

It means that you got twice as many questions correct as the average student.

It means that your grade was 2 points higher than the mean grade on this exam.

It means that your grade was in the upper 2% of all grades on this exam.

It means that your grade is 2 standard deviations above the mean for this exam.

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

A grocery chain runs a prize game by giving each customer a ticket that may win a prize when the box is scratched off. Printed on the ticket is a dollar value ($500,$100, $25) or the statement “This ticket is not a winner.” Monetary prizes can be redeemed for groceries at the store. Here is the probability distribution above represents the amount won on a randomly selected ticket.
Which of the following are the mean and standard deviation, respectively, of the winnings?

$15.00, $2900.00

$15.00, $53.85

$15.00, $26.93

$156.25, $53.85

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

A

B

C

D

E

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Media Image

Is this a probability distribution?

No

Yes

7.

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.

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