Top Posters
Since Sunday
5
o
5
4
m
4
b
4
x
4
a
4
l
4
t
4
S
4
m
3
s
3
New Topic  
johnnyappleseed johnnyappleseed
wrote...
Posts: 124
Rep: 0 0
A year ago
We record the amount of time (xin 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 is 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

What is a 90% confidence interval forβ0, the mean GPA of high school students who spent no time using their cell phone?



(0.0225,0.0082)



(3.4545, 4.5623)



(0.0212,0.0095)



(3.5578, 4.4590)

Textbook 
Introductory Statistics: A Problem-Solving Approach

Introductory Statistics: A Problem-Solving Approach


Edition: 3rd
Author:
Read 31 times
1 Reply
Replies
Answer verified by a subject expert
knh1473knh1473
wrote...
Posts: 117
Rep: 0 0
A year ago
Sign in or Sign up in seconds to unlock everything for free
More solutions for this book are available here
1

Related Topics

wrote...

A year ago
Thanks
wrote...

Yesterday
Correct Slight Smile TY
wrote...

2 hours ago
this is exactly what I needed
New Topic      
Explore
Post your homework questions and get free online help from our incredible volunteers
  960 People Browsing
 114 Signed Up Today
Related Images
  
 1782
  
 397
  
 1279
Your Opinion
What's your favorite math subject?
Votes: 293