Top Posters
Since Sunday
5
a
5
k
5
c
5
B
5
l
5
C
4
s
4
a
4
t
4
i
4
r
4
New Topic  
mhbtelc mhbtelc
wrote...
Posts: 112
Rep: 0 0
A year ago
In a study of typical student grade-point averages (GPAs), we sample 16 students and find an average GPA of 2.76, with a standard deviation of 0.48. Assuming the GPAs are normally distributed, what is an interval that we can be 80% certain contains the mean student GPA?


(2.12, 3.40)



(2.61, 2.91)



(2.60, 2.92)



(2.66, 2.86)

Textbook 
Introductory Statistics: A Problem-Solving Approach

Introductory Statistics: A Problem-Solving Approach


Edition: 3rd
Author:
Read 36 times
1 Reply
Replies
Answer verified by a subject expert
hhortonhhorton
wrote...
Posts: 124
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

mhbtelc Author
wrote...

A year ago
Smart ... Thanks!
wrote...

Yesterday
Good timing, thanks!
wrote...

2 hours ago
You make an excellent tutor!
New Topic      
Explore
Post your homework questions and get free online help from our incredible volunteers
  1320 People Browsing
Related Images
  
 211
  
 280
  
 210
Your Opinion
Which 'study break' activity do you find most distracting?
Votes: 741

Previous poll results: Where do you get your textbooks?