Elementary Statistics, A Step by Step Approach: A Brief Version, 5th edition
MATH 302 302

Spring 2014
Suppose that the demand for a companys product in weeks 1, 2, and 3 are each normally distributed
and the mean demand during each of these three weeks is 50, 45, and 65, respectively. Suppose the
standard deviation of the demand during each of these three
Elementary Statistics, A Step by Step Approach: A Brief Version, 5th edition
MATH 302 302

Spring 2014
To find the probability that out of 10 selections from a 45 person sample in which 15 are boys and 30 are
girls that 7 will be girls and 3 will be boys you must find the probability of each occurrence
independently. Because each time a person is selected
Elementary Statistics, A Step by Step Approach: A Brief Version, 5th edition
MATH 302 302

Spring 2014
1) Based on the sample referenced above, find a 95% confidence interval estimate for the proportion of the
entire voter population who approve or strongly approve of the Presidents handling of the crisis in
the financial markets.
2) If the same sample pro
Supposethataclasscontains15boysand30girls,andthat10studentsaretobeselectedatrandomfora
specialassignment.Findtheprobabilitythatexactly3boyswillbeselected
I have figured out how to solve using the combination rule where nCr = n!/(nr)!r!
Combination rule:
During our course we have explored a number of different statistical applications and tools. In this
week's forum you are to share how you intend to use one or more of the tools that we have examined
in our course. Be specific. Be sure to include a descri
Forthisweeksdiscussion,comeupwithanexampleofdiminishingmarginalutilityyouveencountered
recently.
I would describe diminishing marginal utility as the decline in satisfaction or usage of a
product as additional purchases of the same product increase. The i
When it comes to investing in gold or the stock market it would be ideal to review the expected
values to better understand which would be a better investment. The expected value for the stock
market is calculated by doing the following: .15*25+.35*20+.25
Quiz 1_MATH302
Part 1 of 3  11.0/ 12.0 Points
Question 1 of 20
1.0/ 1.0 Points
Suppose that a histogram of a data set is approximately symmetric and "bell shaped". Approximately,
what percent of the observations are within three standard deviations of th
Part 1 of 6 
4.0/ 5.0 Points
Question 1 of 20
1.0/ 1.0 Points
If events A and B are mutually exclusive, then the probability of both events occurring
simultaneously is equal to
A.1.0
B.any value between 0.5 and 1.0
C.0.5
D.0.0
Answer Key: D
Question 2 of
Part 1 of 3 Question 1 of 20
10.0/ 12.0 Points
1.0/ 1.0 Points
For a boxplot, the box itself represents what percent of the observations?
A.middle 50%
B.lower 25%
C.upper 75%
D.100%
Answer Key: A
Question 2 of 20
1.0/ 1.0 Points
Researchers may gain insig
Chapter 7 Test A
Name: _ Date: _
1. A survey of 800 women shoppers found that 17% of them shop on impulse. What is the
98% confidence interval for the true proportion of women shoppers who shop on
impulse?
.
.
A) 0144 p 0196
.
.
B) 0148 p 0192
.
C) 0139 p
Part 1 of 9 
1.0/ 1.0 Points
Question 1 of 25
1.0/ 1.0 Points
Gender and State are examples of which type of data?
A.Categorical data
B.Continuous data
C.Discrete data
D.Ordinal data
Answer Key: A
Part 2 of 9 
2.0/ 2.0 Points
Question 2 of 25
1.0/ 1.0 P
Question 1 of 20
1.0/ 1.0 Points
The total frequency of the data whose ogive is shown below is approximately
A.18
B.12
C.34
D.90
Answer Key: C
Question 2 of 20
1.0/ 1.0 Points
Numerical variables can be subdivided into which two types?
A.Crosssectional a
Question 1 of 20
1.0/ 1.0 Points
A population includes:
A.all objects of interest in a particular study
B.only machines
C.only people
D.only households
Answer Key: A
Question 2 of 20
1.0/ 1.0 Points
If a variable has possible values 2, 6, and 17, then thi
Suppose that the percentage annual return you obtain when you invest
a dollar in gold or the stock market is dependent on the general state
of the national economy as indicated below. For example, the probability that the economy will be in "boom" state i
Suppose that the demand for a companys product in weeks 1, 2, and 3 are each
normally distributed and the mean demand during each of these three weeks is 50,
45, and 65, respectively. Suppose the standard deviation of the demand during each
of these three
Suppose that a class contains 15 boys and 30 girls, and that 10 students are
to be selected at random for a special assignment. Find the probability that
exactly 3 boys will be selected.
Keep in mind that your post must be made by 11:55PM EASTERN time on
Quiz 1_MATH302
Part 1 of 3 12.0/ 12.0 Points
Question 1 of 20
1.0/ 1.0 Points
Which of the following statistics is not a measure of central location?
A.Interquartile range
B.Median
C.Mode
D.Mean
Answer Key: A
Question 2 of 20
1.0/ 1.0 Points
A pareto char
Quiz 2_MATH302
Part 1 of 6 5.0/ 5.0 Points
Question 1 of 20
1.0/ 1.0 Points
If two events are mutually exclusive, what is the probability that
one or the other occurs?
A.0.25
B.Cannot be determined from the information given.
C.1.00
D.0.50
Answer Key: B
Q
Problem 2
Boards/Day
Actual Output
Effective Capacity
Design Capacity
UtilizationEffective
UtilizationDesign
950
700
1000
135.71%
95.00%
Problem 8
EV is a weighted avg of the chance events
EVsmallexpansion
EVlargeexpansion
$
$
47,000
71,000
=(0.3*40000)+(
Problem 2
Boards/Day
Actual Output
Effective Capacity
Design Capacity
UtilizationEffective
UtilizationDesign
950
700
1000
135.71%
95.00%
Problem 8
EV is a weighted avg of the chance events
EVsmallexpansion
EVlargeexpansion
$
$
47,000
71,000
=(0.3*40000)+(
Problem 2
Boards/Day
Actual Output
Effective Capacity
Design Capacity
UtilizationEffective
UtilizationDesign
950
700
1000
Problem 8
EV is a weighted avg of the chance events
EVsmallexpansion
EVlargeexpansion
=(0.3*40000)+(0.7*50000)
=(0.3*50000)+(0.7*8000
Problem 2
Boards/Day
Actual Output
Effective Capacity
Design Capacity
UtilizationEffective
UtilizationDesign
950
700
1000
135.71%
95.00%
Problem 8
EV is a weighted avg of the chance events
EVsmallexpansion
EVlargeexpansion
$
$
47,000
71,000
=(0.3*40000)+(