She was told that she needs to get plenty of sleep the night before the exam. She is interested in the relationship between the number of hours of sleep a student gets before the exam and the score earned on the exam. She collects information from 10 other appropriate? O No, there is no clear pattern in the residual plot. O Yes, there is no clear pattern in the residual plot. O No, the student who got the most sleep had a students who have already taken the exam as shown in the table. negative residual. O Yes, there are more negative residuals (6) than positive residuals (4). Amount of Score Sleep (Hours) 30 28 7.5 7.5 32 20 21 4 8.5 21 23 4.5 24 31

She was told that she needs to get plenty of sleep the night before the exam. She is interested in the relationship between the number of hours of sleep a student gets before the exam and the score earned on the exam. She collects information from 10 other appropriate? O No, there is no clear pattern in the residual plot. O Yes, there is no clear pattern in the residual plot. O No, the student who got the most sleep had a students who have already taken the exam as shown in the table. negative residual. O Yes, there are more negative residuals (6) than positive residuals (4). Amount of Score Sleep (Hours) 30 28 7.5 7.5 32 20 21 4 8.5 21 23 4.5 24 31

Name: Based on the residual plot, is the linear modelappropriate?A student
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Description: Based on the residual plot, is the linear modelappropriate?A student is preparing to take a standardized exam.She was told that she needs to get plenty of sleep thenight before the exam. She is interested in therelationship between the number of hou

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Concept explainers

Inverse Normal Distribution

The method used for finding the corresponding z-critical value in a normal distribution using the known probability is said to be an inverse normal distribution. The inverse normal distribution is a continuous probability distribution with a family of two parameters.

Mean, Median, Mode

It is a descriptive summary of a data set. It can be defined by using some of the measures. The central tendencies do not provide information regarding individual data from the dataset. However, they give a summary of the data set. The central tendency or measure of central tendency is a central or typical value for a probability distribution.

Z-Scores

A z-score is a unit of measurement used in statistics to describe the position of a raw score in terms of its distance from the mean, measured with reference to standard deviation from the mean. Z-scores are useful in statistics because they allow comparison between two scores that belong to different normal distributions.

Topic Video

Question

Based on the residual plot, is the linear model
appropriate?
A student is preparing to take a standardized exam.
She was told that she needs to get plenty of sleep the
night before the exam. She is interested in the
relationship between the number of hours of sleep a
student gets before the exam and the score earned
on the exam. She collects information from 10 other
students who have already taken the exam as shown
in the table.
O No, there is no clear pattern in the residual plot.
O Yes, there is no clear pattern in the residual plot.
O No, the student who got the most sleep had a
negative residual.
O Yes, there are more negative residuals (6) than
positive residuals (4).
Amount of
Score
Sleep (Hours)
3
7.5
30
28
32
20
21
7.5
4
8.5
21
23
24
31
2
4.5

She fits a least-squares regression line to the data
and determines the equation of the line is ŷ =26-
0.18x, where ĝ is the score earned on the exam
and x is the number of hours of sleep the night before
the exam. The residual plot is given.
4.
8.
10
Amount of Sloop (Hours)
Residual

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