Box 8
20 Total Points
Box 8
1) In a stats class, exam 2 was worth 80 points. We did a regression and found a strong relationship between Exam 2
points and Final Overall Percentage for the class. The best fitting line is
^y =56+ 0.46 x
a. If someone got 72
Box 7
19 Total Points
Box 7
1. Review the reading http:/www.intuitor.com/statistics/T1T2Errors.html about the relationship
between the Justice System and Hypothesis Testing.
a. In the justice system, is it considered a greater error to convict an innocent
Box 6
20 Total Points
Box 6
Bozeman has resident populations of both mountain chickadees and blackcap
chickadees. Researchers at University of Nevada Reno theorized that mountain
chickadees might be better at problem solving because they live in a more
ch
Box 4
20 Points
Box 4
1) The activity we just did in class described an experiment in which students listened to
music while answering SAT questions. One of the four principles of experimental
design says we should Control other variables. What is one var
Box 3
18 Points
Box 3
Before completing the assignment:
Complete Reading 6 in course pack
Watch Videos:
o
View before Activity 7
Meaning of Confidence
o
Also before Activity 7
2 SE Method
1.
Where are bootstrap distributions centered? A
a) The populatio
Box 5
20 Points
Box 5
In a double blind experiment, cocaine addicts were randomly assigned either Desipramine or a placebo.
Of 24 people given Desipramine, 14 were able to stay off cocaine for 6 weeks, whereas in the placebo
group, only 4 of 24 stayed off
Answers are in RED
D2Box 1
16 Points
Box 1
This is currently in a word processing format. Make changes to it to include your answers, and turn it in to your
instructors. They require you to turn in a pdf for the D2L system, so find and click Export to Pdf
Box 2
20 Points
Box 2
In recent years, 80% of those accused of Driving Under the Influence (DUI) get convicted
(includes plea bargains). Suppose a firm of defense lawyers advertises that they can do much
better than that (less convictions). We randomly sa
Solutions to Problem 1 (Table and Tree)
SETTING UP A TWO-WAY PROBABILITY TABLE
1. Write down what you know!
B = the event Alicia has the disease
A = the event Alicia test positive
() = 0.001 (Prevalence is only 1/1000)
(|) = .95 (Sensitivity of 95%)
( | )
Descriptive
Statistics
EXPLORING OUR DATA
Six Steps of a Statistical Investigation
Step 1: What do we want to know
about? This is a question that can be
addressed by collecting data.
Step 2: Selecting people/objects to
study, deciding what data to collect
Random
Processes and
Probability
Practice Example
Example:
In the U.S., the distribution of blood types* is:
O: 46%, A: 39%, B: 11%, AB: 4%
For a randomly selected individual, find
1. P(Individual is not blood type O)
2. P(Individual is blood type O and A
Monday, May 15 Study Guide / Note Taking Guide P.1 P.3 and pages
324 327.
Preliminaries (P.1 P.3)
Anecdotal evidence can be personal _ or striking _.
Statistics is the science of producing useful _ to address a _ question,
_ the resulting data, and drawin
STAT216Summer2017(Online)
ExplorationP1P2:DescriptiveStatisticsWorksheet
1. Ofthefollowingscenarios,identifytheobservationalunits,thevariableofinterest,
andthetypeofvariable(categorical/quantitative):
A. Researchers are studying the rattle length of rattl
Quizork 1
16 Points
QUIZORK 1
This is currently in a word processing format. Make changes to it to include your answers, and turn it in to your
instructors. They require you to turn in a pdf for the D2L system, so find and click Export to Pdf in the File
Quizork 10
19 Total Points
QUIZORK 10
Show all work to receive credit. Read pages 140-141 in your activity pack before class.
1) Some claim that vitamin C prevents the common cold. A Canadian experiment investigated
this claim. At the beginning of winter,
Quizork 3
18 Points
Brianna Bull Shows
QUIZORK 3
Read page 41 in your coursepack and watch videos 6, 7, and 8 online before the next class.
1.
Where are bootstrap distributions centered?
It is centered b. the sample statistic.
2.
What is the problem using
Quizork 5
18 Points
QUIZORK 5
1.
The purpose of creating a bootstrap distribution is to:
a) Estimate the mean of the unknown sampling distribution.
b) Estimate the spread of the unknown sampling distribution.
c) Both A and B.
d) None of the above.
2.
Indi
Box 11
19 Total Points
Box 11
1. True or False: Changing confidence levels will change the center and the width of a confidence
interval.
How does exposure to ozone affect the growth of trees?
1. Answer: false does not affect center
Researchers asking thi
Hayden Ingle
Wesley Bennice
Robin Tiefenthaler
Project 5
Introduction
We chose to evaluate if there was a linear relationship between DaysSki and Weight.
We expected a negative relationship between DaysSki and Weight. We thought that the more
days skied w
Box 3
19 Points
Box 3
1.
Where are bootstrap distributions centered?
a) The population parameter.
b) The sample statistic.
c) The null value.
d) None of the above.
The answer is B, the sample statistic.
2.
When estimating the true value of a parameter, wh
Box 3
19 Points
Box 3
1.
Where are bootstrap distributions centered?
a) The population parameter.
b) The sample statistic.
c) The null value.
d) None of the above.
The answer is B, the sample statistic.
2.
When estimating the true value of a parameter, wh
Box 4
19 Points
Box 4
1. The sampling distribution of depends on all of the following EXCEPT
A. Sample size
B. Number of simulations
C. Population mean
D. Population standard deviation
The answer is letter B, number of simulations.
2. The purpose of creat
Box 2
23 Points
Box 2
Questions 1-2: Suppose listeners to a late-night radio talk show were asked to call and report whether or
not they had ever seen a ghost.
1. Which sampling method is used in this survey?
A. Simple random sample
B. Stratified sample
C
D2Box 1
16 Points
Box 1
This is currently in a word processing format. Make changes to it to include your answers, and turn it in to your
instructors. They require you to turn in a pdf for the D2L system, so find and click Export to Pdf in the File
menu.
Box 4
19 Points
Box 4
1. The sampling distribution of x depends on all of the following EXCEPT
A. Sample size
B. Number of simulations
C. Population mean
D. Population standard deviation
The answer is letter B, number of simulations.
2. The purpose of cre
Box 5
20 Points
Box 5
1. For each of the two research scenarios below,
i.
Identify the cases.
ii.
Name the variables measured on each case.
iii.
State whether each variable is categorical or quantitative.
iv.
Identify which variable is the explanatory var
Box 6
23 Points
Box 6
In a double blind experiment, cocaine addicts were randomly assigned either Desipramine or a placebo.
Of 24 people given Desipramine, 14 were able to stay off cocaine for 6 weeks, whereas in the placebo
group, only 4 of 24 stayed off
D2Box 1
16 Points
Box 1
This is currently in a word processing format. Make changes to it to include your answers, and turn it in to your
instructors. They require you to turn in a pdf for the D2L system, so find and click Export to Pdf in the File
menu.
Box 2
23 Points
Box 2
Questions 1-2: Suppose listeners to a late-night radio talk show were asked to call and report
whether or not they had ever seen a ghost.
1. Which sampling method is used in this survey?
A. Simple random sample
B. Stratified sample
C