A study involved a random sample of eight people. Each subject spent one week sleeping a prescribed number of hours each night and then at the end of a week, each subject participated in a memory test. The number of hours each subject slept each night of the week, and that subject's score on the memory test at the end of the week are found in the table below. x Nightly Sleep Hours 3 3 5 5 8 7 10 9 y: Test Score 20 22 24 27 29 26 25 22 a) Plot the data using technology, then choose the best description below regarding correlation. O quadratic correlation with a negative leading coefficient O quadratic correlation with a positive leading coefficient
A study involved a random sample of eight people. Each subject spent one week sleeping a prescribed number of hours each night and then at the end of a week, each subject participated in a memory test. The number of hours each subject slept each night of the week, and that subject's score on the memory test at the end of the week are found in the table below. x Nightly Sleep Hours 3 3 5 5 8 7 10 9 y: Test Score 20 22 24 27 29 26 25 22 a) Plot the data using technology, then choose the best description below regarding correlation. O quadratic correlation with a negative leading coefficient O quadratic correlation with a positive leading coefficient
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
solve in details please
![b) Use technology to perform quadratic regression to obtain a
parabola of "best fit" in the form y = ax² +bx+c. Enter the
coefficients below. Round each to three decimal places.
b=
c) Using the regression curve, predict the score someone might
receive if they slept 11 hours each night of the week. Round to two
decimal places.
Score](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fc118e6fa-fff4-4073-aebf-497482bea3d6%2F054cc27b-55e4-4903-8b44-a15761357135%2Fg0rkisq_processed.jpeg&w=3840&q=75)
Transcribed Image Text:b) Use technology to perform quadratic regression to obtain a
parabola of "best fit" in the form y = ax² +bx+c. Enter the
coefficients below. Round each to three decimal places.
b=
c) Using the regression curve, predict the score someone might
receive if they slept 11 hours each night of the week. Round to two
decimal places.
Score
![A study involved a random sample of eight people. Each subject
spent one week sleeping a prescribed number of hours each night
and then at the end of a week, each subject participated in a
memory test. The number of hours each subject slept each night of
the week, and that subject's score on the memory test at the end of
the week are found in the table below.
Hours
Sleep Hours y: Test Score
20
22
24
27
29
26
25
22
x Nightly Sleep
3
3
5
5
8
7
10
9
a) Plot the data using technology, then choose the best description
below regarding correlation.
O quadratic correlation with a negative leading coefficient
O quadratic correlation with a positive leading coefficient](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fc118e6fa-fff4-4073-aebf-497482bea3d6%2F054cc27b-55e4-4903-8b44-a15761357135%2Fehju4ke_processed.jpeg&w=3840&q=75)
Transcribed Image Text:A study involved a random sample of eight people. Each subject
spent one week sleeping a prescribed number of hours each night
and then at the end of a week, each subject participated in a
memory test. The number of hours each subject slept each night of
the week, and that subject's score on the memory test at the end of
the week are found in the table below.
Hours
Sleep Hours y: Test Score
20
22
24
27
29
26
25
22
x Nightly Sleep
3
3
5
5
8
7
10
9
a) Plot the data using technology, then choose the best description
below regarding correlation.
O quadratic correlation with a negative leading coefficient
O quadratic correlation with a positive leading coefficient
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