If you pay more in tuition to go to a top business school, will it necessarily result in a higher probability of a job offer at graduation? Let y=percentage of graduates with job offers and x=tuition cost; then fit the simple linearmodel, E(y)=β0+β1x,
to the data below. Is there sufficient evidence (α=0.10 of a positive linear relationship between y and x?
|
School |
Annual tuition ($) |
% with Job Offer |
|---|---|---|
|
1 |
39,738 |
95 |
|
2 |
39,301 |
86 |
|
3 |
39,182 |
92 |
|
4 |
38,731 |
98 |
|
5 |
38,497 |
98 |
|
6 |
38,254 |
91 |
|
7 |
37,946 |
91 |
|
8 |
37,794 |
98 |
|
9 |
36,734 |
91 |
|
10 |
36 comma 14836,148 |
8585 |
Give the null and alternative hypotheses for testing whether there exists a positive linear relationship between y and x?
A.H0: β1s=0
Ha:β1<0
B. H0: β0=0
Ha:β<0
C.H0: β0=0
Ha:β0>0
D. HO:β0:=0
Ha: β0≠0
E. H0: β1=0
Ha: β1>0
F. H0:β1=0
Ha:β1≠0 .
Find the test statistic.
t=___________ (Round to two decimal places as needed.)
Find the p-value.p-=______________ (Round to four decimal places as needed.)
Make the appropriate conclusion = ALPHA=0.10
Choose the correct answer below.
A.
Do not reject
H0. There is
insufficient
evidence that there exists a positive linear relationship between y and x.
B.
Do not reject
H0.
There is
sufficient
evidence that there exists a positive linear relationship between y and x.
C.
Reject
H0.
There is
insufficienti
evidence that there exists a positive linear relationship between y and x.
D.
Reject
H0.
There is
sufficient
evidence that there exists a positive linear relationship between y and x.
Click to select your answer(s).
In: Statistics and Probability
Cara Ryder managers a ski school in a large resort and is trying to develop a schedule for instructors. The instructors receive little salary and work just enough to earn room and board. The receive free skiing and spend most of their free time tackling the resort’s notorious double black-diamond slopes. Hence, the instructors work only 4 days a week. One of the lesson packages offered at the resort is a 4-day beginner package. Ryder likes to keep the same instructor with a group over the 4-day period, so she schedules the instructors for 4 consecutive days and then 3 days off. Ryder uses years of experience with demand forecasts provided by management to formulate her instructor requirements for the upcoming month.
|
Day |
M |
T |
W |
Th |
F |
S |
Su |
|
Requirements |
7 |
5 |
4 |
5 |
6 |
9 |
8 |
a) Determine how many instructors Ryder needs to employ. Give preference to Saturday and Sunday off. (Hint: Look for the group of 3 days with the lowest requirements.)
b) Specify the work schedule for each employee. How much slack does your schedule generate for each day?
In: Operations Management
Student Party Identification
|
Parent Party ID |
Democrat |
Independent |
Republican |
|
Democrat |
604 |
245 |
67 |
|
Independent |
130 |
235 |
76 |
|
Republican |
63 |
180 |
252 |
In: Math
A business school conducted a survey of companies in its state. They mailed a questionnaire to 200 small companies, 200 medium-sized companies and 200 large companies. The rate of nonresponse is important in deciding how reliable survey results are. Here are the data:
Small
Medium
Large
Response
125
81
40
No response
75
119
160
What is the overall rate of nonresponse? If response rate is not related to size of company, you would expect all companies, regardless of size, to have a similar response rate.
In: Math
Please create a c++ program that will ask a high school group that is made of 5 to 17 students to sell candies for a fund raiser. There are small boxes that sell for $7 and large ones that sell for $13. The cost for each box is $4 (small box) and $6 (large box). Please ask the instructor how many students ended up participating in the sales drive (must be between 5 and 17). The instructor must input each student’s First name that sold items and enter the number of each box sold each (small or large). Calculate the total profit for each student and at the end of the program, print how many students participated and the total boxes sold for each (small and large) and finally generate how much profit the group made. (15 points)
In: Computer Science
FCAT scores and poverty. In the state of Florida, elementary school performance is based on the average score obtained by students on a standardized exam, called the Florida Comprehensive Assessment Test (FCAT). An analysis of the link between FCAT scores and sociodemographic factors was published in the Journal of Educational and Behavioral Statistics (Spring 2004). Data on average math and reading FCAT scores of third graders, as well as the percentage of students below the poverty level, for a sample of 22 Florida elementary schools are summarized by the number given below. (x= percentage of students below poverty level, and y=math score ) n = 22 ??xi = 1292.7 ??yi = 3781.1 ??x2i =88668 ??yi2 =651612 ??xiyi =218292 (a) Propose a straight-line model relating math-score to percentage of students below poverty level. (b) Find the least-squares regression line fitting the model to the data. (c) Interpret the estimates for intercept and slope in the context of the problem. (d) Test whether the math score is negatively related to the percentage of students below the poverty level. (e) Construct a 99% confidence interval for the slope of the model, and interpret your result in the context of the problem.
In: Math
A student studying in medical school, according to the body
structure of a person with high fever, the body
will help calculate the time required to lower the temperature to a
certain degree
wants you to develop a formula.
Heat produced in the human body 400 W, total heat passing through
the body through transmission, convection and radiation
If 800 W and body specific heat 3500 kJ / kgK, other students may
also need other features.
By choosing according to your own body structure, the time to lower
the body temperature by 10 o C.
You calculate.
size=180cm
weight=93
In: Mechanical Engineering
Please create a C++ program that will ask a high school group that is made of 5 to 17 students to sell candies for a fund raiser. There are small boxes that sell for $7 and large ones that sell for $13. The cost for each box is $4 (small box) and $6 (large box). Please ask the instructor how many students ended up participating in the sales drive (must be between 5 and 17). The instructor must input each student’s First name that sold items and enter the number of each box sold each (small or large). Calculate the total profit for each student and at the end of the program, print how many students participated and the total boxes sold for each (small and large) and finally generate how much profit the group made. (15 points)
In: Computer Science
The supply curve of work requiring a high school degree or less is QS = - 13,000 + 2000P and the demand for such work is QD = 11,000 - 1000P. Assume this is a competitive market.
1. What quantity is hired if a minimum wage of $10 is imposed? What is the deadweight loss (DWL) of this policy?
2. Instead of a minimum wage, policymakers introduce a $1.5 wage subsidy (think EITC). What is the quantity of work supplied under this policy? What is the DWL of this policy?
3. What percentage of the subsidy is captured by the employers? (Hint: the buyer's burden is represented by
In: Economics
The supply curve of work requiring a high school degree or less is QS = - 13,000 + 2000P and the demand for such work is QD = 11,000 - 1000P. Assume this is a competitive market.
a) What is the market wage and quantity?
b) What quantity is hired if a minimum wage of $10 is imposed? What is the deadweight loss (DWL) of this policy?
c) Instead of a minimum wage, policymakers introduce a $1.5 wage subsidy (think EITC). What is the quantity of work supplied under this policy? What is the DWL of this policy?
d) What percentage of the subsidy is captured by the employers? (Hint: the buyer's burden is represented by ϵ S ϵ S − ϵ D)
In: Economics