Homework Week 4
Submit one Excel file containing the following:
1) a labeled (male and female in different colors) scatterplot similar to the one you
created on p. 47 of the OLI module, but this one will use the attached dataset
height.weight.xls. Make su
Hereagainisthehistogramshowingthetimes,inminutes,
requiredfor25ratsinaanimalbehaviorexperimentto
successfullynavigateamaze.
Apossiblevalueofthemedianinthisexampleis:
A.
B.
C.
D.
E.
3.3
3.9
4.6
5.5
Itisimpossibletoanswerwithoutseeingallofthedata.
Oftheathomegames,weareinterestedinfindingwhat
proportionwerewins.Inordertofigurethisout,weneedto
find:
A.
B.
C.
D.
E.
P(H)
P(W)
P(HandW)
P(H|W)
P(W|H)
Feedback
Goodjob!Wearelimitingourinteresttothehomegames
only,soweconditiononH.Outofthehomegames,weare
i
INFO LIT BLOG INSTRUCTIONS
Each member of the class will contribute to the Information Literacy Project using our Info Lit
Blog. The Blog will therefore be a kind of collective journal, in which our contributions and
comments build up a database of inform
Hereagainisthehistogramshowingthetimes,inminutes,
requiredfor25ratsinaanimalbehaviorexperimentto
successfullynavigateamaze.
Assumethatthelargestobservationinthisdatasetis8.6
minutes.Ifthisobservationwerewronglyrecordedas86,
then:
A.
B.
C.
D.
E.
Boththeme
6. What two Z values, symmetric around the mean, will
contain 75.4% of all Z values?
Z = 1.16 and Z=-1.16
If you subtract the middle
75.4% from 100% you get
24.6%, the area left in
both tails combined.
Dividing that in half gives
you the area in one of th
Question2
Points:10outof10
Hereagainisthehistogramshowingthetimes,inminutes,
requiredfor25ratsinaanimalbehaviorexperimentto
successfullynavigateamaze.
Whichofthefollowingbestdescribestheshapeofthe
histogram?
A.
B.
C.
D.
E.
Symmetric
Leftskewedwithnooutli
Homework Week 6
You will be submitting a Word file and an Excel file this week.
Part 1
(worth 70 points)
1. Unlike the spinner on p. 90 of the OLI module,
imagine a spinner that also has 3 colors - - Red,
White, Green - - but all the colors are the same s
A.
B.
C.
D.
E.
Oftheathomegames,whatproportionofgameswerewins?
(Note:Someanswersareroundedtotwodecimalplaces.)
.12
.15
.20
.33
.42
Feedback
Goodjob!NowweactuallywanttofindP(W|H).Weapply
thedefinitionofconditionalprobability:
Asurveywasconductedtodeterminethenumberofservings
ofvegetableseaten,perday,byadolescentsintheUnited
States.Thefollowingtableshowstheresults:
Whatisthemodalnumberofvegetableservingseaten,per
day,byadolescentsintheUnitedStates?
A.
B.
C.
D.
E.
Zero
One
Two
T
Answers to Homework Week 8
Before trying to do these problems, I recommend that you not only complete the OLI
module and read the textbook pages but that you also use the Textbook Materials (posted
on Blackboard) to review Chapter 6, Sections 1 and 2. I t
A.
B.
C.
D.
E.
LetAandBbetwoindependentevents.IfP(A)=.5,what
canyousayaboutP(A|B)?
CannotfinditsinceP(B)isnotknown.
CannotfinditsinceP(AandB)isnotknown.
CannotfinditsincebothP(B)andP(AandB)arenot
known.
Itisequalto.5.
Itisequalto.25.
Feedback
Goodjob!If
What You Need to Know to Prepare for the Midterm
CO LL APS E
Therewillbebetween30and40questions.Theformatwill
besimilartotheformatofthehomeworkassignments. There
maybequestionsthatrequireyoutouseExceltoperform
somestatisticalwork.Youwillnotberequiredtoco
Which Z Formula to Use
One of the biggest problems students have when doing Week 10's homework (and on the
final exam) is deciding which of the following 2 formulas to use when calculating a Z
score:
1)
Z=
()
X
OR
2)
Z=
( X)
n
Formula (1) is the one we u
Start your essay by defining nationalism and Imperialism in a way that
reflects the new conditions after 1918. Your definition should be specific-referring to the sources and to events in the Mid-East, India, China, and Africa that
illustrate what you wri
Team
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
AA
BB
CC
DD
League Wins
0
75
0
63
0
82
0
83
0
91
0
66
0
65
0
85
0
95
0 102
0 116
0
62
0
73
0
80
1
92
1
88
1
88
1
66
1
73
1
76
1
93
1
86
1
68
1
68
1
82
1
86
1
62
1
93
1
79
1
90
Average
Ticket$
11.79
Homework Week 7
The topic of Probability is a challenging one for students. For that reason, and because
there are two Checkpoints this week, Im not assigning an additional homework
assignment on Probability. I want you to have plenty of time to go step b
Homework Week 10
In addition to completing this week's OLI and textbook work, use the Textbook Materials for
Chapter 6. For Chapter 6, Section 3, watch the Lecture Video and the 3 Exercise Videos.
Also, read Which Z Formula to Use (posted with Homework in
Homework Week 3
At this early point in the term, you are already prepared to statistically analyze a set of
data!
The attached data set, homes.district1.xls, contains information about the price, size, and
number of bedrooms of a sample of 200 homes.
For
Homework Week 2
Submit an Excel Workbook containing the following worksheets:
1) A pie chart you construct in Excel using the data about Super Bowl Snack
Foods at the bottom of p. 73 in the text book.
[Instructions for how to do this are given in Learn by
Hereagainisthehistogramshowingthetimes,inminutes,
requiredfor25ratsinaanimalbehaviorexperimentto
successfullynavigateamaze.
Forthedatadescribedbytheabovehistogram,
A.
B.
C.
D.
E.
themedianwillbesmallerthanthemean.
themedianwillbelargerthanthemean.
themed
Thishistogramshowsthetimes,inminutes,requiredfor25
ratsinaanimalbehaviorexperimenttosuccessfullynavigate
amaze.
Whatpercentageoftheratsnavigatedthemazeinlessthan
5.5minutes?
A.
B.
C.
D.
E.
34%
60%
68%
70%
84%