Question

The following data are the monthly salaries y and the grade point averages x for students who obtained a bachelor's degree in business administration. GPA Monthly Salary ($) 2.7 3,500 3.5 3,900 3.7 4,200 3.2 3,700 3.4 4,200 2.7 2,400 The estimated regression equation for these data is ŷ = -568.2 + 1,318.2x and MSE =181,477. a. Develop a point estimate of the starting salary for a student with a GPA of 3.0 (to 1 decimal). $ b. Develop a 95% confidence interval for the mean starting salary for all students with a 3.0 GPA (to 2 decimals). $ ( , ) c. Develop a 95% prediction interval for Ryan Dailey, a student with a GPA of 3.0 (to 2 decimals). $ ( , )

Answer #1

a) The point estimate of the starting salary for a student with a GPA of 3.0 is

? = -568.2 + 1,318.2(3) = 3,386.4

b)

The following data are the monthly salaries y and the
grade point averages x for students who obtained a
bachelor's degree in business administration.
GPA
Monthly Salary ($)
2.7
3,600
3.5
3,800
3.7
4,200
3.2
3,700
3.4
4,200
2.7
2,400
The estimated regression equation for these data is = -277.3 +
1,227.3x and MSE =217,386.
a. Develop a point estimate of the starting
salary for a student with a GPA of 3.0 (to 1 decimal).
$
b. Develop a 95%...

The following data are the monthly salaries y and the grade
point averages x for students who obtained a bachelor's degree in
business administration. GPA Monthly Salary ($) 2.7 3,600 3.4 3,800
3.7 4,200 3.1 3,800 3.5 4,200 2.8 2,300 The estimated regression
equation for these data is = -430 + 1,275x and MSE =293,625. a.
Develop a point estimate of the starting salary for a student with
a GPA of 3.0 (to 1 decimal). $ b. Develop a 95%...

The following data are
the monthly salaries y and the grade point averages
x for students who obtained a bachelor's degree in
business administration.
GPA
Monthly Salary
($)
2.6
3,500
3.4
3,900
3.6
4,200
3.1
3,800
3.5
4,200
3
2,300
The estimated
regression equation for these data is ŷ = 84.3 + 1,114.3x
and MSE =416,464.
a.
Develop a point estimate of the starting salary for a student with
a GPA of 3.0 (to 1 decimal).
$
b.
Develop a...

The following data are the monthly salaries y and the
grade point averages x for students who obtained a
bachelor's degree in business administration.
GPA
Monthly Salary ($)
2.6
3,500
3.5
3,900
3.6
4,200
3.1
3,700
3.5
4,100
2.9
2,500
The estimated regression equation for these data is =
210 + 1,075x and MSE =247,625.
a. Develop a point estimate of the starting
salary for a student with a GPA of 3.0 (to 1 decimal).
$
b. Develop a 95% confidence...

The following data are the monthly salaries y and the
grade point averages x for students who obtained a
bachelor's degree in business administration.
GPA
Monthly Salary
($)
2.6
3600
3.4
3900
3.6
4300
3.2
3800
3.5
4200
2.9
3900
The estimated regression equation for these data is =
2090.5 + 581.1x and MSE = 21,284.
Round your answer to two decimal places.
a. Develop a point estimate of the starting
salary for a student with a GPA of 3.0 (to...

-------------How would part b and c be calculated in
excel ? --------------
The following data are the monthly salaries y and the
grade point averages x for students who obtained a
bachelor's degree in business administration.
GPA
Monthly Salary ($)
2.6
3,500
3.4
3,800
3.6
4,300
3.1
3,700
3.5
4,100
3
2,500
The estimated regression equation for these data is ŷ = 267.1 +
1,057.1x and MSE =303,179.
a. Develop a point estimate of the starting
salary for a student...

The following data are the monthly salaries y and the grade
point average for students who obtained a bachelor's degree in
business administration with a major in information systems
GPA
2.6
3.4
3.6
3.2
3.5
Monthly salary
3300
3600
4000
3500
3900
3600
Question
1 What is estimate of b1 equal to?
a) 351.1
b) 581.1
c) 842.5
d) 15.8
2) What is estimate of bo equal to?
a) 1290.5
b) 1790.5
c) 1415.8
d) 1612.8
3) What is...

The grade point averages (GPA) of 18 randomly selected college
students are used to estimate the mean GPA of the college students.
The GPAs from the sample are as follows: 2.3 3.3 2.6 1.8 0.9 3.1
4.0 0.7 3.1 2.3 2.0 3.1 3.4 1.3 2.6 2.6 3.7 2.2
a- Would it be justified if the standard normal distribution is
used to construct the confidence interval? Explain.
b-If the population is assumed to be normally distributed,
construct a 98% confidence interval...

12. ANALYSIS
OF VARIANCE
The average of grade
point averages (GPAs) of college courses in a specific major is a
measure of difficulty of the major. An educator wishes to conduct a
study to find out whether the difficulty levels of different majors
are the same. For such a study, a random sample of major grade
point averages (GPA) of 8 graduating seniors at a large university
is selected for each of the four majors mathematics, English,
Education, and Biology...

The following data
provide the starting salary for students who recently graduated
from a local university and accepted jobs soon after graduation.
The starting salary, grade-point average (GPA), and major (business
or other) are provided.
SALARY
$29,500
$46,000
$39,800
$36,500
GPA
3.1
3.5
3.8
2.9
Major
Other
Business
Business
Other
SALARY
$42,000
$31,500
$36,200
GPA
3.4
2.1
2.5
Major
Business
Other
Business
Using a computer, develop a regression model that could be used
to predict starting salary based on GPA...

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