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AP Statistics Solutions to Packet 9
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Sampling Distributions Sampling Distributions Sample Proportions Sample Means
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HW #7 1 4, 9, 10 11 For each boldface number in Exercises 9.1 9.4, (a) state whether it i
AP Statistics
Study Guide
Chapter 2
Measuring Relative Standing
Standardized Values and zscores
Percentiles
Rank the data lowest to highest. Counting up from the lowest value to the select data point we
discover the percentile that is represented by the
P
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Organizing Data:
Looking for Patterns and
Departures from Patterns
1
2
3
4
Exploring Data
The Normal Distributions
Examining Relationships
More on TwoVariable Data
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Chapter Number and Title
ction, New York
The Granger Colle
FLORENCE NIGHTINGALE
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AP Statistics
Solutions to Packet 10
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Introduction to Inference
Estimating with Confidence
Tests of Significance
Making Statistical Sense of Significance
Inference as a Decision
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HW #12 1 3, 5
10.1 POLLING WOM
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Chapter Number and Title
ction, New York
The Granger Colle
SIR FRANCIS GALTON
Correlation, Regression, and Heredity
The leastsquares method will happily fit a straight line to
any twovariable data. It is an old method, going back to the
French mathe
12.1 I nference for a Population Proportion
EXAMPLE 12.1 RISKY BEHAVIOR IN THE AGE OF A IDS
How colnmon is behavior that puts people at risk of AIDS? The National AIDS
Behavioral Surveys interviewed a random sample of 2673 adult heterosexuals. Of
these, 1
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AP Statistics Solutions to Packet 6
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Probability The Study of Randomness The Idea of Probability Probability Models General Probability Rules
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HW #37 3, 4, 8, 11, 14, 15, 17, 18 6.3 SHAQ The bask
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AP Statistics Solutions to Packet 5
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Producing Data Designing Samples Designing Experiments Simulating Experiments
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HW #29 1 3, 5  7 5.1 FUNDING FOR DAY CARE A sociologist wants to know the opin
ESTIMATING WITH CONFIDENCE
Statistical inference provides methods for drawing conclusions about a
population from sample data.
SAT Math Scores in California
Example 10.2
Suppose you want to estimate the mean SAT Math score for the more than 350,000 high
s
Some Basic Probability Notation and Terminology
Let A and B be two sets.
1. Suppose every element of a set A also belongs to set B,
then A is called a subset of B, or A is said to be contained
in B, which is written as
A
B or B
A
2. Two sets are equal if
.
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ACTIVITY 14
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Chapter 13
Section 2
Inference for twoway tables
Example 13.4 Treating Cocaine Addiction
Chronic users of cocaine need the drug to feel
pleasure. Perhaps giving them a medication that
fights depression will help them stay off cocaine.
A three year study
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 11 Inference for Distributions
11.2 COMPARING TWQ MEANS
Comparing two populations or two treatments is one of the most common situations encountered in statistical practice. We call such situations twosample
problems.
TWOSAMPLE PROBLEMS
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AP Statistics Solutions to Packet 7
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Random Variables Discrete and Continuous Random Variables Means and Variances of Random Variables
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HW #44 2, 3, 6 8, 13 17 7.2 THREE CHILDREN A couple plans t
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AP Statistics Solutions to Packet 8
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The Binomial and Geometric Distributions The Binomial Distributions The Geometric Distributions
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HW #1 1 5, 7, 8 8.1 BINOMIAL SETTING? In each situation b
AP Statistics
Study Guide
Chapter 3
Overview
The study guide is in the order presented in the text. Sample questions are provided as a
separate link on the web site. A key will be posted one day before the test.
Explanatory and Response Variables
Given a
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10.1 (a) 44% to 50%. (b) We do not have information about the whole population; we only know about a small sample. We expect our sample to give us a good estimate of the population value, but it will not be exa
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8.1 (a) No: There is no fixed n (i.e., there is no definite upper limit on the number of defects). (b) Yes: It is reasonable to believe that all responses are independent (ignoring any "peer pressure"), and all
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7.1 (a) P(less than 3) P(1 or 2)
2 6 1 3.
(b)(c) Answers vary.
7.2 (a) BBB, BBG, BGB, GBB, GGB, GBG, BGG, GGG. Each has probability 1/8. (b) Three of the eight arrangements have two (and only two) girls, so P(X
170
Chapter 7
Chapter 7
7.1 (a) P(less than 3) = P(1 or 2) = 2/6 = 1/3. (b)(c) Answers will vary.
7.2 (a) The possible arrangements are: BBB, BBG, BGB, GBB, GGB, GBG, BGG, GGG. Each
arrangement has probability 1/8. (b) Three of the eight arrangements have
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AP Statistics
Solutions to Packet 14
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Inference for Regression
Inference about the Model
Predictions and Conditions
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HW #32 1, 2, 6, 7
14.1 AN EXTINCT BEAST, I Archaeopteryx is an extinct beast
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AP Statistics
Packet 12/13
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Inference for Proportions
Inference for a Population Proportion
Comparing Two Proportions
Inference for Tables: ChiSquare Procedures
Test for Goodness of Fit
Inference for TwoWay Tables
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AP Statistics
Packet 11
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Inference for Distributions
Inference for the Mean of a Population
Comparing Two Means
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HW #19 1 4, 7  10
11.1 Writers in some fields often summarize data by giving x and its standard e
WILLIAM S . GOSSET

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Brewing Ektter Beer, Brewing New Statistics
What would cause the head brewer of the famous Guinness
brewery in Dublin, Ireland, not only to use statistics but to
invent new statistical methods? The w c h for better k r
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10.2 Tests of significance ::359
10.2 TESTS O F SIGNIFICANCE
C onfidence intervals are one of the two most common types of statistical
inference. Use a confidence interval when your goal is to estimate a population parameter. T h e second common
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Humerus length (cm)
14.1 (a) See also the solution to Exercise 3.19. The correlation is r 0.994, and linear regression
3.660 1.1969x . The scatterplot below shows a strong, positive, linear relationgives y
ship
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13.1 (a) (i) 0.20
(ii) P 0.3172.
P
0.25. (ii) P
0.235. (b) (i) 0.02
P
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0.0204. (c) (i) P
0.25.
13.2 H0: The maritalstatus distribution of 25 to 29yearold U.S. males is the same as that of the
p
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12.1 (a) Population: the 175 residents of Tonyas dorm; p is the proportion who like the food.
(b) p 0.28.
12.2 (a) The population is the 2400 students at Glens college, and p is the proportion who believe
tuiti