Unit 2: Week 2 - Week 2 Homework
Week Two:
Complete the following questions from the end of the chapter.
Chapter 6
page 187, #36
page 187, #39
Chapter 7
page 215, #32, 37
Homework needs to be submitte
WEEK 2 HOMEWORK
E6-36. The payout for Powerball lottery and their corresponding odds and probabilities are shown below. The
price of a ticket is $1.00. Find the mean and standard deviation of the payo
Unit 5: Week 5 - Week 5 Homework
Week Five:
Complete the following questions from the end of the chapter.
Chapter 13
page 423, #40
page 424, #44
page 425, #47
Homework needs to be submitted in the dro
WEEK 1 HOMEWORK - CH3
P3-65. U.S. housing prices reached their peak in July of 2006. The following data shows the ratio of the
prices reported in a recent month to the July 2006 figure. These are to b
Wages and Wage Earners
Wages and Wage Earners:
EC 315
Insert Name
Term Project Report
Fall 1 2010
1
Wages and Wage Earners
TABLE OF CONTENTS
DICUSSION OF RESULTS
3
SUMMARY
11
REFERENCES
12
APPENDIX
13
PART I. HYPOTHESIS TESTING
PROBLEM 1 A certain brand of fluorescent light tube was advertised as having an effective
life span before burning out of 4000 hours. A random sample of 84 bulbs was burned
Chapter 6 Page 190, Questions 36 and 39
36. The payouts for the Powerball lottery and their corresponding odds and probabilities of
occurrence are shown below. The price of a ticket is $1.00. Find the
Discussion (WK5)
Question 1:
What is correlation? Does correlation prove causation? Why or why not? Explain and provide
examples to support your explanation.
Correlation signifies the extent to which
Discussion (WK2)
Question 1:
Give an example representing a discrete probability distribution and a continuous probility distribution.
Explain why your choice is discrete and continuous.
Discrete prob
Week 4- Midterm Exam
EC 315 Quantitative Research Methods
PROBLEM 1 (Weight 20 points).
NBC TV news, in a segment on the price of gasoline, reported last evening that the mean
price nationwide is $1.5
Discussion (WK4)
Question 1:
What is a type I and type II errors in hypothesis testing? What would be examples of each?
Explain.
Hypothesis is a statement yet to be tested.
Type I error refers to wron
WEEK 6 HOMEWORK
12-22. A physician who specializes in weight control has three different diets she recommends. As an
experiment, she randomly selected 15 patients and then assigned 5 to each diet. Aft
Quiz (WK6)
1.
Analysis of variance is used to (Points : 1)
compare nominal data.
compute t test.
compare population proportion.
Simultaneously compare several population means.
Suppose a package deliv
Taryn Kendrick
Chapter 3 Homework: Pages 92-93, Questions 64, 66, and 67
Note: In problem #67, the baseball data can be obtained from http:/highered.mcgrawhill.com/sites/0073521477/student_view0/index
WEEK 4 HOMEWORK
10-34. A recent article in vitality magazine reported that the mean amount of leisure time per week for
American men is 40.0 hours. You believe this figure is too large and decide to c
Discussion (WK3)
Question 1:
As a sample size approaches infinity, how does the students t distribution compare to the
normal z distribution? When a researcher draws a sample from a normal distributio
WEEK 3 HOMEWORK
9-37.
The National Collegiate Athletic Association (NCAA) reported that the mean number of hours spent per
week on coaching and recruiting by college football assistant coaches during
1. From past records it is known that the average life of a battery used in a digital clock is 305 days. The
battery life is normally distributed. The battery was recently modified to last longer. A s
Quiz (WK2)
1. Which of the following is NOT true regarding the normal distribution? (Points : 1)
Mean, median and mode are all equal
It has a single peak
It is symmetrical
The points of the curve meet
Quiz (WK3)
All possible samples of size n are selected from a population and the mean of
each sample is determined. What is the mean of the sample means? (Points : 1)
1.
Exactly the same as the popula
Discussion (WK7)
Question 1:
When a researcher has two samples with two means, one of the assumptions for two samples is
independence of between the two samples. What does this mean? What happens if t
Quiz (WK2)
1. The shape of any uniform probability distribution is (Points : 1)
Negatively skewed
Positively skewed
Rectangular
Bell shaped
2. The upper and lower limits of a uniform probability distr
Discussion (WK6)
Question 1:
The F test is used in Analysis of Variance (ANOVA). When would a researcher use an ANOVA? Explain.
ANOVA Means Analysis of Variance. It is used to analyze total variabilit
EC315
MODULE 4
P:318-319
Q: 34, 38, 61
34)
N Hyp: 40
A Hyp: < 40
T value = 1.671
Test stat = -1.397
We can not reject the nullso no evidence leisure time is less than 40.
38)
N Hyp: 25
A Hyp: > 25
X b
Question 1
1 / 1 pts
To study the population of consumer perceptions of new technology, sampling of the
population is preferred over surveying the population because _.
Sampling is more accurate
We ca