This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: We record the amount of time (xin minutes) per day that a group of 12 high school students spend ... (Read 66 times)

jlol3

  • Full Member
  • ***
  • Posts: 131
on: Feb 26, 2023

Question 1

This histogram shows residuals from a simple linear regression:



It appears that:


◦

there is a dependence among the errors.


◦

the mean of the error distribution is not zero.


◦

the error distribution is not normal.


◦

the error variance is not constant.



Question 2

We record the amount of time (x in minutes) per day that a group of 12 high school students spend using their cell phone (texting, talking, and web use). We also record the overall GPA (y) of each student. Following a regression summary for these data:

​

The regression equation is

GPA = 4.01 - 0.0153 CellTime

​

Predictor     Coef SE       Coef       T       P

Constant       4.0084     0.2486    6.12   0.000

CellTime    -0.015334   0.003226   -4.75   0.001

​

S = 0.472864 R-Sq = 69.3% R-Sq(adj) = 66.3%

​

Analysis of Variance

​

Source           DF       SS      MS        F       P

Regression        1   5.0519   5.0519   22.59   0.001

Residual Error   10   2.2360   0.2236

Total            11   7.2879

​

Does there appear to be a significant linear relationship between theamount of cell phone use and GPA? (Use α = 0.01.)


◦

No, because ther2value is too low.


◦

Yes, because the regression equation is defined.


◦

Yes, because thep-value from the test for significance is 0.000.


◦

Yes, because thep-value from the test for significance is 0.001.

Introductory Statistics: A Problem-Solving Approach ¦ Kokoska ¦ 3rd Edition
Buy Test-Bank


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by jlol3 on Feb 26, 2023

jacquelyngibson

  • Full Member
  • ***
  • Posts: 161
Reply #1 on: Feb 26, 2023
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
Answer Preview
Only 39% of students answer this correctly


jlol3

  • Member
  • Posts: 131
Reply 2 on: Feb 26, 2023
Great answer, keep it coming :)

ttt030911

  • Member
  • Posts: 315
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

The most destructive flu epidemic of all times in recorded history occurred in 1918, with approximately 20 million deaths worldwide.

Did you know?

Adolescents often feel clumsy during puberty because during this time of development, their hands and feet grow faster than their arms and legs do. The body is therefore out of proportion. One out of five adolescents actually experiences growing pains during this period.

Did you know?

Individuals are never “cured” of addictions. Instead, they learn how to manage their disease to lead healthy, balanced lives.

Did you know?

Most women experience menopause in their 50s. However, in 1994, an Italian woman gave birth to a baby boy when she was 61 years old.

Did you know?

Patients should never assume they are being given the appropriate drugs. They should make sure they know which drugs are being prescribed, and always double-check that the drugs received match the prescription.

Members of the Lemba ethnic group from southern Africa. Members of the Lemba ethnic group from southern Africa.
Under what conditions can part-time employment in high school be a negative influence on school ... Under what conditions can part-time employment in high school be a negative influence on school ...
Group fitness activities geared toward senior citizens can improve their physical strength and ... Group fitness activities geared toward senior citizens can improve their physical strength and ...
Aggregates are people who happen to be in the same place at the same time. Aggregates are people who happen to be in the same place at the same time.
The age-adjusted rate of melanoma, a deadly form of skin cancer, from 1973 to 2000. Over that time p The age-adjusted rate of melanoma, a deadly form of skin cancer, from 1973 to 2000. Over that time p
Favourite part of school kindergarten Favourite part of school kindergarten
Video: Introduction to Herpes

For a complete list of videos, visit our video library