What is a type I and type II errors in hypothesis testing? What would be examples of each? Explain.
A hypothesis is a statement yet to be tested. Type I error refers to wrongly rejecting a hypothesis
instead of accepting it whereas Type II error refers to
EC315: Week 5 - Homework
40. A suburban hotel derives its gross income from its hotel and restraint
operations. The owners are interested in the relationship between the number
of rooms occupied on a nightly basis and the revenue per day in the restraint.
Purpose Statement
Correlation is a statistical measurement of the relationship between two variables. Possible
correlations range from +1 to 1 (Cherry, 2016). A zero correlation indicates that there is no
relationship between the variables. A correlation
Problem 1 (Weight 40 points).
NBC TV news, in a segment on the price of gasoline, reported last evening that the mean price
nationwide is $1.50 per gallon for self-serve regular unleaded. A random sample of35 stations in
the Milwaukee, WI, area revealed t
Purpose Statement
In one paragraph, state the correlation and identify the primary independent variables.
Before proceeding to the development of formulas, it is may be well to define a few terms that
are possibly unfamiliar (Yule, 1897). The quantitiesne
Page 92-93
64. The Kentucky Derby is held the first Saturday in May at Churchill Downs in Louisville,
Kentucky. The race track is one and one quarter miles. The following table shows the winners
since 1990, their margin in victory, the winning time, and t
Surname 1
Volleyball
In this report, we are interested in determining if there is any relationship between the
dependent variable Kills and the independent variables: Errors, Total Attacks, Assists, Aces in a
Volleyball game. In this case, we are interest
Vietnam
1
Final Term Paper
EC 309
Vietnam
Politics
Vietnam
2
Upon the birth of the Democratic Republic of Vietnam the country became a socialist
republic which is a law-governed state. Vietnams political system implements the power of one
single political
1. Question :
The results of a mathematics placement exam at two
different campuses of Mercy College follow:
Student
Answer:
9.30
2.60
3.37
3.75
Instructor
Explanation:
Because we know the population standard deviations, we use the z-statistic
and
Points
1. Question :
How many permutations of the three letters C, D, and E are
possible?
Student
Answer:
3
0
6
9
Instructor
Explanation:
Using the permutation formula 3!/0! = (3)(2)(1) = 6.
Points Received:
1 of 1
Comments:
Question 2 Question :
.
Student Answe
Read the Article:
Your Essay:
1. In 2 paragraph(s) analyze data collection, analysis, and conclusion. Do you agree, disagree with
the approach? Could there other variables to analyze? What might you do different?
-Does the Superbowl Predict Economic Growt
1. Question :
A random sample of size 15 is selected from a normal population.
The population standard deviation is unknown. Assume the null
hypothesis indicates a two-tailed test and the researcher decided
to use the 0.10 significance level. For what val
1. Question :
For any distribution, there are an equal number of values above
and below the mean.
Student
Answer:
True
False
Instructor
There are an equal number of observations above
Explanation and below the median.
:
Points Received:
1 of 1
Comments:
Q
1. Question :
What is the chart called when the paired data (the dependent and
independent variables) are plotted?
Student
Answer:
A scatter diagram
A bar chart
A pie chart
A histogram
Instructor
Explanation:
A scatter diagram shows the relationship betwe
Aleiah Enders
Microeconomics
June 19, 2016
Questions & problems
1. Explain the law of demand. Why does demand curve slope downward? How is a market demand
curve derived from individual demand curves? The law of demand implies that the consumer
will buy mo
Chapter 3 Notes: Describing Data: Numerical Measures
2 Numerical Ways of describing numerical data: Measures of Location and measures of dispersion
Measures of Location: often referred to as averages. Purpose is to pinpoint the center of a distribution
of
xxxxx
Unit 7 Homework
6 Dec 15
Unit 7 HW: Ch 11 pg 351-352, Questions 24, 34, 37, and 38
24.) H0: d n H1: d > n
d=21 n=28 nd=54 nn=60 Xbard=345 Xbarn=351 a=.05
Reject H0 if computed z > critical z. Critical z= 1.645
z=
Xbar ( d ) Xbar ( N )
d N
+
nd nN
=
xxxxx
Unit 4 HW
15 Nov 15
Unit 4 HW: Pg 318-319, 321 Questions 34, 38, and 61
34.) H0:40; H1:<40
t=
xbar
s
n
Reject H0 if t< -2.662
= 37.8-40/(12.2/60) = -1.397
Since -1.397 is greater than the critical value of -2.662, one cannot conclude that the infor
xxxxxx
Unit 3 HW
8 Nov 15
Unit 3 HW Pg. 283-84 Questions 33, 42, and 50
33.) a.) 99% confidence interval
68.6 2.580 (8.2/50) = 68.6 3.108
b.) The interval does include the value suggested by the NCAA, so the value is reasonable.
c.) If you switch from 99%
Price Ceilings
New York City Rent Control and Limited Tuition
Intermediate Microeconomics EC300
March 4th, 2012
1
2
Price Ceilings
It is unlikely that many people would be willing to pay $2,000 a month for rent of a 500
square foot apartment. However, in