AP Statistics
Unit 3B
Homework & Review
Answers
1. (a) t * = 2.262
(b) t * = 2.861
(c) Table B: t * = 2.660; technology invT(area: .995; df: 76) = 2.642
2. It would not be wise because the sample size is small, n = 20 < 30, and there are
outliers, 3, in t
AP Statistics
Unit 2B
Homework & Review
1 0.98
0.01 1 0.01 = 0.99
2
closest zvalue corresponding to area of 0.99 is z* = 2.33
calculator: invNorm(area: 0.99, : 0, : 1) = 2.326
2. Student council wants to estimate what proportion of all PRHS juniors and se
STATISTICS
SECTION I
Timel hour and 30 minutes
Number of questions-40
Percent of total gradeSD
Directions: Solve each of the following problems, using the available space for scratchwork. Decide which is the
best of the choices given and ll in the correSp
AP Statistics
Unit 2B: Inference About Proportions
Dates
Jan 30/
Feb 2
Feb 3/4
Feb 5/6
Feb 9/10
Feb 11/12
Feb 13/17
Section(s) and Topic(s)
Confidence Interval for a Population Proportion
The OneSample z Test for Proportions
Confidence Interval for p1 p2
AP Statistics
AP Set 2
Spring
Name: _ Period: _
Points: _ / 8
Directions: Show all your work. Indicate clearly the methods you use, because you will
be graded on the correctness of your methods as well as on the accuracy and
completeness of your results a
AP Statistics
AP Set 2
Spring
Name: _ Period: _
Points: _ / 8
Directions: Show all your work. Indicate clearly the methods you use, because you will
be graded on the correctness of your methods as well as on the accuracy and
completeness of your results a
AP Statistics
AP Set 3
Spring
Name: _ Period: _
Points: _ / 8
Directions: Show all your work. Indicate clearly the methods you use, because you will
be graded on the correctness of your methods as well as on the accuracy and
completeness of your results a
Unit 2B Test Review Extra Problems
MULTIPLE CHOICE:
1. A poll identifies the proportions of highincome and lowincome voters who support
a decrease in taxes. If we need to know the answer to be within +0.02 at the 95%
confidence interval, what sample size
Statistics Independent Study
Page 1 of 7
Mixed Practice with Multiple-Choice and Free-Response Questions
Answers
Multiple-Choice Section
_
1.
C
21.
B
2.
B
22.
D
3.
C
23.
A
4.
D
24.
E
5.
D
25.
C
6.
D
26.
B
7.
B
27.
E
8.
B
28.
A
9.
D
29.
B
10.
A
30.
C
11.
D
Unit 2B Test Review Extra Problems Solutions
Multiple Choice
1. C
2. E
3. C
4. B
5. E
6. A
7. D
8. B
9. C
10. B
11. A
12. B
13. D
14. A
15. C
16. C
17. A
18. C
19. A
20. B
Free Response
1. (a) STATE: We want to estimate the true proportion p of all kids w
Unit 3B Test Review Extra Problems Solutions
ANSWERS
Multiple Choice
1. C
2. D From the ttable, critical value t* = 2.756 with df = 29.
1.2
3. C Using the t scores: 28 + 2.045
.
30
4. C df = 4
0.274
3.2 + 2.132
= 3.2 + 0.261
5
5. A Since there are two ind
AP Statistics: Syllabus 1
Syllabus 1058793v1
Scoring Components
SC1 The course provides instruction in exploring data.
4
SC2 The course provides instruction in sampling.
5
SC3 The course provides instruction in experimentation.
5
SC4 The course provides i
Advanced Placement Statistics
Union Grove High School
Objective:
AP Statistics is a rigorous, college level non-calculus based course intended to be the equivalent of a first yea
college level course. The course is guided by the AP syllabus and covers the
Statistics Independent Study
Page 1 of 19
Mixed Practice with Multiple-Choice and Free-Response Questions
Study Sheet
Multiple-Choice Section
Choose the one best answer for each of the following questions.
1. The probability of getting a specific grade in
Unit 1B Test Review Extra Problems
Multiple Choice: Identify the letter of the choice that best completes the statement or
answers the question.
1. Suppose you take a random sample of size 25 from a population with mean of 120
and a standard deviation of
AP Statistics
Unit 1B: Introduction to Inference
Dates
Jan 6/7
Jan 8/9
Jan 12/13
Jan 14/15
Jan 16/20
Jan 21/22
Jan 23/26
Jan 27/28
Section(s) and Topic(s)
Administration
The Sampling Distribution of p Revisited
The Sampling Distribution of x
Sampling from
You must demonstrate (or assume, if necessary) that the following conditions are met before performing a hypothesis test or constructing a confidence interval:
One sample
1.
2.
3.
sample is random
standard deviation of the population is
known
population i
AP Statistics
Unit 1B
Homework & Review
You may use a calculator on the entire test and you will be given the following equations:
Formulas
(I) Descriptive Statistics
x
x
P A B P A P B P A B
i
n
1
2
xi x
n 1
sx
n1 1 s12 n2 1 s22
sp
n1 1 n2 1
y b0 b1x
AP Statistics
AP Set 4
Spring
Name: _Key_ Period: _
Points: _ / 8
Directions: Show all your work. Indicate clearly the methods you use, because you will
be graded on the correctness of your methods as well as on the accuracy and
completeness of your resul
AP Statistics
AP Set 3
Spring
Name: _ Period: _
Points: _ / 8
Directions: Show all your work. Indicate clearly the methods you use, because you will
be graded on the correctness of your methods as well as on the accuracy and
completeness of your results a
Chapter 4 Test Review
AP Stats
1. Suppose the correlation between two variables x and y is due to the fact that both are responding to
changes in some unobserved third variable. What is this due to?
2. Suppose a straight line is fit to data having respons
AP Statistics
Unit 2B
Homework & Review
You may use a calculator on the entire test and you will be given the following equations:
Formulas
(I) Descriptive Statistics
x
x
P A B P A P B P A B
i
n
1
2
xi x
n 1
sx
n1 1 s12 n2 1 s22
sp
n1 1 n2 1
y b0 b1x
How to Write AP Statistics Exam Responses
Turning Insights into Solutions
As students work through the free-response questions on an AP Statistics Exam, they are asked to respond in a
variety of ways. Some of the questions are fairly straightforward, and
AP Statistics
Unit 1B
Homework & Review
ANSWERS:
1. A. Both A and B appear to be unbiased but A has less variability than B.
2. (a) NormalCan assume there are more than 1000, 10n = (10)(100) = 1000,
international travelers per day, and because np = (100)(
Unit 3B Test Review Extra Problems
Multiple Choice:
1. What is t0.01 (20)?
(A)1.325
(B) 2.197
(C) 2.528
(D) 2.845
(E) None of the above
2. What is the critical value for t for a 99% confidence interval based on a sample size
of 30?
(A) 2.457
(B) 2.462
(C)
Five Things You Must Know for the AP Statistics Exam
1. Graders want to give you credithelp them! Make them understand what you are doing,
why you are doing it, and how you are doing it. Dont make the reader guess at what you
are doing.
Communication is
AP Statistics
Unit 3B: Inference About Means
Dates
Feb 18/19
Feb 20/23
Feb 24/25
Feb 26/27
Mar 2/3
Section(s) and Topic(s)
Confidence Interval for a Population Mean
The OneSample t Test for Means
Paired t Test for Means
Confidence Interval for 1 2
Signifi