ECO 221, SP2014
Rollins College
Prof. M. Vidovic
Review Questions for Exam 1
1. The article Effect of Temperature on the pH of Skim Milk (Journal of Dairy Research,
1988) reported on a study involving x = temperature in (C) under specified experimental
co
Computer Lab 5
Due: Friday, March 28, 2014
Note: Please type your answers and include any relevant portions of your SPSS output. Write
full sentences. Dont assume that I know how to read the SPSS output. Once finished, upload
your file to Blackboard.
1. W
ECO 221, SP 2014
Rollins College
Prof. M. Vidovic
Hypothesis Test for a Population Mean
Due Monday, April 7, 2014
Follow the Steps in Hypothesis Testing
1. Describe the population characteristic about which the hypotheses are to be tested.
2. State the nu
Review for Statistics Final Exam, Spring 2014
Due Monday, April 28, 2014
1. The Journal of the American Medical Association reported on the results of a National
Health Interview Survey designed to determine the prevalence of smoking among U.S.
adults. Cu
Homework 5
Due Wednesday, March 19, 2014
1. What percent of a standard Normal distribution is found in each region? Draw a picture first.
a.
b.
c.
d.
z > -2.05
z < -0.33
1.2 < z < 1.8
|z| < 1.28 (this means z < -1.28 and z > 1.28)
2. In a standard Normal
ECO 221, SP 2014
Rollins College
Prof. M. Vidovic
Hypothesis Test For a Population Mean
Due Wednesday, April 2, 2014
Coffee industry claimed that the average U.S. adult drinks 1.7 cups of coffee per day. To test this claim, a
random sample of 34 adults wa
ECO 221, Spring 2014
Rollins College
Prof. M. Vidovic
In Class Exercises Describing Numerical Data
1. The Apollo space program lasted from 1967 until 1972 and included 13 missions. The missions
lasted from as little as 7 hours to as long as 301 hours. The
Correlation
1.
The paper A Cross-National Relationship Between Sugar Consumption and Major
Depression? (Depression and Anxiety [2002]: 118-120) concluded that there was a
correlation between refined sugar consumption (calories per person per day) and annu
ECO 221, SP 2014
Rollins College
Prof. M. Vidovic
Hypothesis Test for two Populations
Due Wednesday, April 16, 2014
1. In a study of malpractice claims where a settlement has been reached, two random
samples were selected: a random sample of 515 closed ma
Computer Lab 1
Friday, January 24, 2014
Note: Please type your answers and include any relevant portions of your SPSS output. Write
full sentences. Dont assume that I know how to read the SPSS output. Once finished, upload
your file to Blackboard.
1. The
ECO 221, SP2014
Rollins College
Prof. M. Vidovic
Independence and Multiplication Rule
1. Define Independence.
2. Suppose the winning outcome is that you get heads from a coin toss, and then roll 1 or 2 using
one die.
a. Are these two events independent?
b
Lab 7
Due: Friday, April 11, 2014
Hypotheses testing for one and two Population Means
NOTE: Include the appropriate portions of SPSS output to support your answers. Write answers in
clear sentences. For hypothesis testing, follow the 7 steps.
1. The data
Binomial Distribution
1.
2.
3.
4.
Binomial experiment has following
properties:
Fixed number of trials
Two mutually exclusive outcomes for
each trial: success (S) and failure (F)
Outcomes are independent across trials
Proportion of successes is the same f
Computer Lab 4
Friday, March 14, 2014
Note: Please type your answers and include any relevant portions of your SPSS output. Write
full sentences. Dont assume that I know how to read the SPSS output. Once finished, upload
your file to Blackboard.
Binomiall
Peer review form
Writer: Ahmed Benchekroun
Reviewer:
123456-
That the essay consists at least of 5 paragraphs
Is there consistency between the thesis statement and the body of the essay
Is unity maintained in paragraph 1 is coherence maintained in paragra
RATE OF RETURN RISK IN ISLAMIC FINANCE
Rate of return risk is arising because of unforeseen changes in the market rate of return, which
unfavorably affect the firms earnings. In a conventional financial organization, returns are fixed, both the
firm and f
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home / study / math / statistics and probability / questions and answers / x.\5 part i select the correct
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Question: X.\5 Part I
Select the .
x.\5
Part I
Select the correct answer and wri
ECO 221, Spring 2014
Rollins College
Prof. M. Vidovic
Applications of Probability Distributions review questions
1.
Assume that z scores are normally distributed with a mean of 0 and a standard deviation of 1. Draw
the picture first.
a. If P (0 < z < a) =
Hypothesis testing:
Comparing two
populations or
Chapter 11
treatments
11.11, p. 654
11.15, p. 655
11.15, p. 655
1 = true mean breaking force in a dry medium at 37 degrees
2 = true mean breaking force in a dry medium at 22 degrees
Breakin
g_Force
Med
1.00
ECO 221, SP2014
Rollins College
Prof. M. Vidovic
Introduction to Probability
1. Define an experiment, outcome and event and give one example of each.
2. Use the set notation to represent the sample space for the following experiments:
a.
A roll of a die.
Hypothesis testing
Bestea Bottlers
One of the most common applications of
hypothesis testing of the mean is the
quality control problem of assessing
whether or not the underlying population
mean is on target.
Consider the case of Bestea Bottlers.
One of B
ECO 221, SP2014
Rollins College
Prof. M. Vidovic
Review Questions for Probability
1. Assume you have applied to two different universities (let's refer to them as Universities
A and B) for your graduate work. In the past, 25% of students (with similar cre
ECO 221, Spring 2014
Rollins College
Prof. M Vidovic
Correlation coefficient and Least Squares Regression line
The paper A Cross-National Relationship Between Sugar Consumption and Major Depression?
(Depression and Anxiety [2002]: 118-120) concluded that
ECO 221, SP2014
Rollins College
Prof. M. Vidovic
Review Questions for Exam 1
1. Of the 2201 passengers on the Titanic, only 711 survived. The practice of women and
children first was first used to describe the chivalrous actions of the sailors during the
Review for Statistics Final Exam, Spring 2014
Due Monday, April 21, 2014
1. A sample of 14 cans of Brand I diet soda gave the mean number of calories of 23 per can with a
standard deviation of 3 calories. Another sample of 16 cans of Brand II diet soda ga
ECO 221, Spring 2014
Rollins College
Prof. M. Vidovic
Practice Questions Least Squares Regression
1. A consumer organization has reported test data for 50 car models. We will examine the
associations between the x = weight of the car (in thousands of poun
Introduction to Probability
Chapter 6
Multiplication Rule
The probability that two events, A and B, occur is
the probability of the intersection set of their
outcomes.
Consider a dice roll, where
A = cfw_1, 3, 5 = odd numbers, and B = cfw_4, 5, 6 =
high n
Principles of Counting
Multiplication Formula
If there are m ways of doing one thing and n ways
of doing another thing, there are mxn ways of doing
both
Total number of arrangements = (m)(n)
Principles of Counting
How many different arrangements of shapes
Sampling Variability and
Sampling distribution
Basic Terms
Any quantity computed from values in a
sample is called a statistic.
The observed value of a statistic depends
on the particular sample selected from the
population; typically, it varies from samp
_ 3. In a upper-tailed test of means where the population standard deviations are unknown but
assumed to be equal, the sample sizes for population one is 12 and population two is 14. The value of
the test statistic for a significance level of 0.01 is:
a.