4. Find the regression equation. Iround coefficients to three decimal places) 5. Graph the regression equation on your scatter plot. 6. If a student's exam score (x) is 89, what does the least-squares equation forecast for the minutes she spent on the exam ly)?
4. Find the regression equation. Iround coefficients to three decimal places) 5. Graph the regression equation on your scatter plot. 6. If a student's exam score (x) is 89, what does the least-squares equation forecast for the minutes she spent on the exam ly)?
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
4-6
Transcribed Image Text:Use the data as given in the problem and answer the following questions. The data shows the exam
score and the time in minutes that a student spent on the exam. UPLOAD YOUR RESPONSE to
Paired Data
x (Exam Score)
95
80
92
75
61
83
v (Time in Minutes) 86
75
95
67
55
80
Make sure to answer all the questions.
1. Create a scatter gram. (I suggest that the x-axis range from 60 to 100 in increments of 5 and the
y-axis should start from 50 and go to 100 in increments of 5)
2. Find correlation coefficient r (Round to three digits.)
3. Use the Critical Value for Correlation Coefficient Table to determine if there is evidence for a
linear correlation. Assume a-0.5 (Write down the critical value from the table and answer yes or
no)
4. Find the regression equation. (round coefficients to three decimal places)
5. Graph the regression equation on your scatter plot.
6. If a student's exam score (x) is 89, what does the least-squares equation forecast for the minutes
she spent on the exam ly)?
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 4 steps with 1 images
Recommended textbooks for you
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman