Home
Search
Gallery
Blogs
Dictionary
Textbooks
Resource Library
Flashcards
Latest Topics
Ask a Question
Home
Take a Tour
Study Tips
Help Pages
Contact Us
Gallery
Recently Added
Videos
Search
Blogs
Dictionary
Add New Word
Random Term
Recent Changes
Resource Library
Share Your Resources
Recently Added
Search
Forum
Ask a Question
Log In
Sign Up
your
homework help
forum
Q & A Board
Gallery
Notes and Downloads
This Board
Research Articles
Entire Website using Google
Forum
Search
Advanced Search
Image Gallery
Resource Library
Topics
Unresolved Questions
Discussions
Trending
Recent Posts
Chat
Subjects
Recent
Posts
•
Discussions
•
Unresolved Questions
Top Posters
Since Sunday
p
69
69
C
18
I
13
n
13
a
12
12
11
C
11
s
11
11
m
11
Home
Q & A Board
Science-Related Homework Help
Mathematics
Statistics and Probability
Print
New Topic
Studying for exams A philosophy professor has found a correlation of 0.80 between the number of ...
spruckj
spruckj
wrote...
Go to Answer
Posts:
187
Rep:
12
0
3 weeks ago
3 weeks ago
Studying for exams A philosophy professor has found a correlation of 0.80 between the number of ...
Studying for exams
A philosophy professor has found a correlation of 0.80 between the number of hours students study for his exams and their exam performance. During the time he collected the data, students studied an average of 10 hours with a standard deviation of 2.5 hours, and scored an average of 80 points with a standard deviation of 7.5 points.
a. Create a linear model to estimate the number of points a student will score on the next exam from the number of hours the student studies.
b. If a student studies for 15 hours, what score should the student expect on the next exam? Show your work.
Textbook
Stats: Modeling the World
Edition:
4
^{th}
Authors:
Bock, Velleman, De Veaux
Read 42 times
2
Replies
Report
Replies
Answer verified by a
subject expert
nick1116
nick1116
wrote...
#1
Answer Link
Posts:
262
Rep:
11
0
3 weeks ago
3 weeks ago
Sign in
or
Sign up
in seconds to unlock everything.
a. Explanatory variable: number of hours spent studying
Response variable: score on exam
slope: 2.40
intercept: 56
Model:
= 56 + 2.4(
Hours
)
b.
= 56 + 2.4(15) = 92 A student who studies for 15 hours should expect to score 92 points on the exam, based on this model.
1
Report
Related Topics
Solved
In a university statistics course a correlation of -0.8 was found between number of classes missed ...
Solved
Grace has been studying for her final exams for 2 weeks. She has four exams in three days and by the ...
Solved
A correlation of .8 was found between the number of hours spent studying and final exam scores. This ...
Solved
Janet has found studying for finals and her graduate school entrance exams during the Fall semester ...
Researchers have found that there is a high positive correlation between the number of cigarettes ...
Solved
A researcher found a correlation of -.24 between scores on a self-esteem scale and number of ...
Solved
When studying Drosophila genetics, Morgan found that the haploid chromosome number equals the number ...
Solved
Suppose an algebra professor found that the correlation between study time (in hours) and exam score ...
Show More
spruckj
wrote...
#2
3 weeks ago
Thanks
Report
New Topic
Quick Reply
[center][color=gray]Please [b]login or register[/b] to leave a reply[/color][/center]
Explore
Post your homework questions and get free online help from our incredible volunteers.
Why Sign Up?
Learn More
Improve Grades
Help Others
Save Time
Accessible 24/7
175 People Browsing
Start New Topic
Take the Tour
Study Tips
Browse by Textbook
New
Your Opinion
Where do you get your textbooks?
Amazon or alike
Specialty textbook website
Campus bookstore
Textbook swap service
E-Book from Publisher
Friends
Other
Votes: 101
Previous poll results:
Which of the following is the best resource to supplement your studies:
Related Images
92
103
23
Latest Blogs
Watch this 1940's Disney Cartoon Made to Fight Malaria
Where is our third eyelid?
Canada's only desert
This Island has More Sheep than Humans
Are vaccines safe for children?
Ready to ask a question on
Biology Forums
?
Try it out
▸
Which of the following individuals is most likely to be a victim of human trafficking?
–
Legal Studies
Which of the following statements regarding the cost of cybercrime is false?
–
Legal Studies
Multilingual writers
–
Language Studies
The distribution of the number of hours that a random sample of people spend doing chores per week i
–
Mathematics
Revolutionaries seeking to overthrow all established forms of government are known as anarchistic terrorists.
–
Legal Studies
Each of the following figures shows a person (not to scale)located on Earth at
–
Physics
Four left handers in Doubles Badminton matches.
–
Curiosity Questions
How can you determine if the glucose-aversion trait in cockroach?
–
General Biology
Describe the basic profile of the average hacker, including primary motivation.
–
Legal Studies
The Graded Naming Test and sociocultural differences: Researchers often use z tests to compare their
–
Statistics and Probability
Loading...