Economics 215 Name
S ection 101
Homework #2.
Due: Monday, February 2, 2008.
1) There are eight survivors from a shipwreck that managed to swim to a remote island that just
happeim to be bccupied by a television crew so you see what happens on your local c
Economics 215
Name_
Monday, April 7, 2014
Exam #2
1). From a population of size 100,000 youve drawn a sample of size n = 36 to estimate the
population mean of the variable of interest. You are given that the variable of interest in this
population has a n
Chapter 1
A Framework for Financial Accounting
PART A ACCOUNTING AS A
MEASUREMENT/COMMUNICATION PROCESS
LO1 Describe the two primary functions of financial accounting.
A. The functions of financial accounting are to
a. _ business activities of a company
a
Economics 21 5
Section 101
Homework #4.
Due Monday, September 29, 2008.
1. A continuous random variable X is known to be uniformly distributed
betweenOand 10. J0,g:; 2 O
a) Whats P(X> 8)? W P
r 4? W i
b) Whats 13(2ng6)? yew23:» 7;" viii/:3
L) a
'2 "x.
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Economics 215, Spring 2014 Final Exam Name
l.The following scattergram of data was taken from a sample of 3 (x, y) pair observations. (All points
depicted are integer values).
3 [ .(3,8) X4, Wig]; ) vac/f) Jig,- (i)
0
71 l l »2 L( 5 o 0
6 1? G 0 .~ 1? 5 £
Economics 215
Section 101
Homework #3.
Due Monday, February 5, 2007
1). Which of the following random variables would you generally expect
to be discrete and which would you expect to be continuous? (Identify
variables as a, b, c, d, e, and i).
a) The n
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Economics 215, Section 101, Homework #8. Due: Monday
Name
1. A sample of 0 items provides a sample standard deviation of 9.
a. Compute a 90% condence interval estimate of the population variance.
- 2 L p11 an 5 L L _ 7
_, a, U2 ,3 M [Na 2%;
x
Economics 215
Name_
Monday, April 1, 2013
Exam #2
1). From a population of size 100,000 youve drawn a sample of size n = 36 to estimate the
population mean of the variable of interest. You are given that the variable of interest in this
population has a n
Chpt. 7. Sampling and Sampling Distributions.
Recall from earlier chapters;
A population is the set of all the elements of
interest in a study.
A sample is a subset of elements from the
population.
Due to excessive time and/or costs associated with
collec
Econ. 215 WWW Name i535;
Exam #1, February 24, 2014
1. a. From a sample of 4 paired observations of the discrete random variables A and B, the
following cross-tabulation was created. Calculate the sample means, variances, standard
deviations, covariance,
ACCT 201 Sec 001/002
Chapter 1 Study Plan
Before Class on August 26:
1. Read syllabus
2. Read Great Adventures, pp. 50-51
Before Class on August 28:
1. Read all of Chapter 1
2. Print Chapter 1 Outline (Blackboard)
3. Print Chapter 1 Homework (Blackboard/C
Economics 215
Name_
Section 101
Homework #5.
Due Monday, October 27, 2014
1). A population of size 10,000 has a mean of 200 and a standard
deviation of 50 for variable X. A sample of size 100 is going to be
drawn.
a) What is the expected value for the sam
Econ. 215
Name_
Exam #1, October 7, 2013
1. a. From a sample of 4 paired observations of the discrete random variables A and B, the
following cross-tabulation was created. Calculate the sample means, variances, standard
deviations, covariance, and correla
Economics 215, Spring 2014 Final Exam
Name_
1.The following scattergram of data was taken from a sample of 3 (x, y) paired observations. (All
points depicted are integer values).
8|
(3,8)
7|
6|
5 | (1,5)
(y)
4|
3|
2|
(5,2)
1|
1 2 3 4 5 6
(x)
a). Calculate
ku,
Name
Economics 215
Monday, April 7 ,2014
I
Exam#2
1). From a population of size 100,000 you've drawn a sample of size n : 36 to estimate the
population mean of the variable of interest. You are given that the variable of interest in this
36. The sampl
Economics 215 Name ,8 \
Section l 01
Homework #6.
Due Monday, November 3, 2008
1-) Suppose a sample of size 400 was drawn from an innite population.
The sample mean was found to be 190, and the sample standard
deviation is 200. Find the condence interv
Chpt. 10.1 Statistical Inferences about Means
with Two Populations.
In chapters 8 & 9 we developed interval estimates
and conducted hypothesis tests on a sample from a
single population.
In chapter 8, the interval estimate provided us an
estimate of the p
Chpt. 9. Hypothesis Testing.
We developed point and interval estimates of
population parameters and p in chapters 7 & 8.
Now we are going to use what we learned there to
do hypothesis testing. We make a statement
about the possible value of a population p
Econ 215-101: Chapter 6 (Probability) Work Sheet (10/03/2016)
_
Assigning Probabilities
The probability assigned to each experimental outcome must be between 0 and 1, inclusively.
The sum of the probabilities for all experimental outcomes must equal 1.
Econ 215-101 Homework 5: Answer Key
1.Messenger Service
Three messenger services deliver to a small town in Oregon. Service A has 60% of all the scheduled deliveries, service B
has 30%, and service C has the remaining 10%. Their on-time rates are 80%, 60%
Chapter 7 Review: Short Answer Questions
1.Number of Birds
Alana and Eva are sisters. Let X denote the number of birds that Alana may have in the next two years, and let
Y denote the number of birds Eva may have during the same period. The marginal probab
ECON 215-001, FALL 2016.
Homework 1
Due Date: Monday, August 29, 2016 (Class time).
Name
:
Instructions:
Answer all questions and use the spaces provided to write/type your answers.
Write legibly and do not use attachments as part of your answers. You c
stem '3 fa?
COMPLETION QUESTIONS POINTS IN PARENTHESES I Lg?)
if each possible sample of size n has the SQ m 6 probability of being/
seiected, then any one of the samples is called a simple random sample.
purpose of estimating the population mean mont
uimm Ll
Economics 215
/,
/ COMPLETION QUESTIONS (POINTS IN PARENTHESES) . ,I
WW -
\1/(1)The point em 1m (2% i'. of the difference of population means is 1'2)? .
for Ho: #1 #2 < 0' In a 0'1 and 02 known case" is 2. 3S. The p -value
2. (2) The test st
CHEW l :3 Q
WM
Economics 215 if; j:
w a
COMPLETION QUESTIONS (POINTS IN PARENTHESES)
1. /(1) The nominal scale IS a scaie of measurement for ngit mi data.
L/
2/Data collected at the same point in time are called -1'
" data.
3. k2? A sample of data value
exam Z
EconomICS 215 f 2 cfw_ . J
,2?
_ COMPLETION QUESTIONS (POINTS IN PARENTHESES)
Mhree winners will be selected from _12 contestants In a random drawing The "T
number of possible groups of three winners (order 18 not important) IS 3&0
MW the probabili