Q.
An article suggests that a Poisson process can be used to represent the occurrence of structural loads
over time. Suppose the mean time between occurrences of loads is 0.5 year.
(a) How many loads can be expected to occur during a 2-year period?
(b) Wh
Group A Questions
Question #4
A politician claims that he is supported by a clear majority of voters. In a recent survey, 28 out of 43
randomly selected voters indicated that they would vote for the politician. Use a 10% significance level
for the test. U
Group C Questions
Ch. 7 Q 1
Consider the following hypotheses:
H0: = 330
HA: 330
The population is normally distributed with a population standard deviation of 69. Use
Table 1.
Critical Value
The Value of |Z a| at LOS 0.01% is 2.58
a. Use a 1% level of si
Group B Questions:
Ch. 4 Q 1
A basketball player is fouled while attempting to make a basket and receives two free throws. The
opposing coach believes there is a 36% chance that the player will miss both shots, a 14% chance that
he will make one of the sh
Q1
The production department of Celltronics International wants to explore the relationship between the
number of employees who assemble a subassembly and the number produced. As an experiment, 3
employees were assigned to assemble the subassemblies. They
Q44
The manufacturer of an MP3 player wanted to know whether a 10 percent reduction in price is
enough to increase the sales of its product. To investigate, the owner randomly selected eight
outlets and sold the MP3 player at the reduced price. At seven r
Prob & Stat - 300
Mr. Dooley
Chapter 3 Review
NAME:_
1.)
An ordinary die is thrown once. If a 1 or 6 appears, a ball is drawn from urn A, otherwise a
ball is drawn from urn B. Urn A contains 3 red marbles, 2 white marbles and 1 blue marble. Urn B
contains
Prob & Stat - 300
Mr. Dooley
Final Chapter 3 Review
NAME:_
1.) In a batch of 50 CDs 10% are defective. If 3 cds are randomly selected without replacement
what is the probability of at least 1 being defective.
2.) In a lottery bin, there are 20 ping pong n
AP Statistics
Drug Testing and Bayes Theorem
Suppose it is assumed that about 5% of the population uses drugs. A drug test is given to employees of a certain
company. The test is 95% accurate; that is, it correctly labels a drug user 95% of the time and c
NAME_DATE_
Stat - 300
Prob &
Chapter 3 Quiz#1
Mr. Dooley
1.) Suppose you roll a pair of fair dice and you total the result.
a.) What is the probability you roll a 6?
a_
b.) What is the probability that you roll a multiple of 3
b_
c.) What is the probabili
Prob & Stat - 300
Mr. Dooley
Chapter 3 Review
NAME:_
1.)
An ordinary die is thrown once. If a 1 or 6 appears, a ball is drawn from urn A, otherwise a
ball is drawn from urn B. Urn A contains 3 red marbles, 2 white marbles and 1 blue marble. Urn B
contains
Chapter 3: Examining Relationships
Most statistical studies involve more than one variable. Often in the AP Statistics exam, you will be asked
to compare two data sets by using side by side boxplots or histograms etc. However, there are times
where we wan
Chapter 2: The Normal Distributions
Section 2.1: Measures of Relative Standing & Density Curves
Z-scores (Measures of Relative Standing)
Suppose there is one spot left in the University of Michigan class of 2014 and the admissions department
has the decis
Chapter 10: Estimating with Confidence
Section 10.1: Confidence Intervals: The Basics
If we want to estimate the value of some parameter from a population, we can take a sample and calculate
a statistic from that sample. The sample statistic is an estimat
Chapter 7: Random Variables
Section 7.1: Discrete and Continuous Random Variables
Random Variable: A variable, usually represented by an X, that has a single numerical value (determined
by chance) for each outcome of an experiment.
Examples:
1) X = The nu
Chapter 13: Comparing Two Population
Parameters
Section 13.1: Comparing Two Means
When we learned about designing scientific studies we had a basic format for testing two competing
claims. For example, if a pharmaceutical company comes up with a new medic
Chapter 9: Sampling Distributions
Section 9.1: Sampling Distribution
The introduction to the topic of statistical inference using statistical concepts in interpreting scientific
results from studies and surveys.
Parameter: A number that describes an aspec
Chapter 8: The Binomial and Geometric
Distributions
Section 8.1: The Binomial Distribution
There are many experiments and situations that result in what are called dichotomous responses
responses for which there exist two possible choices (True / False,
Section 5.2: Designing Experiments
Some terminology you probably already know
Experimental Units The things on which the experiment is done.
Subjects When the experimental units are human beings
Treatment A specific experimental condition applied to the u
Chapter 6: Probability
Section 6.2: Probability Models
A Little Probability Background
The mathematics of chance/randomness is called Probability.
Chance behavior is unpredictable in the short run, but has a regular and predictable pattern in the long
run
Chapter 4: More on two-Variable Data
Section 4.1: Transforming Relationships
Question: What do you do if the data shows a relationship that is not linear?
Answer: Try a transformation.
Applying a function such as the logarithm or square root to a quantita
Chapter 5: Producing Data
Section 5.1: Designing Samples
Collecting Data
In order to better understand the characteristics of a population, statisticians and researchers often use a
sample from that population and make inferences based on the summery resu
11
Chapter 1
1.1 (a) The sum of the weights is 231.8 million tons. (b) Bar graphs are shown below.
40
30
30
Percent of total
Percent of total
40
20
10
0
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as
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pe
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Chapter 1: Exploring Data
AP Statistics Preliminaries
Statistics is the science (and art) of learning from data.
Individuals are the objects described by a set of data. Individuals may be people, but they may also be
animals or things.
A variable is any c