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
Home Q & A Board Science-Related Homework Help Mathematics Statistics and Probability
New Topic  
doggerfresh doggerfresh
wrote...
Go to Answer
Posts: 135
Rep: 0 0
A year ago
When you are testing whether two population means of two normally distributed populations differ and the population variances are both unknown but unequal, thet test statistics will usually have a non-integer number of degrees of freedomv. In this case, you should:


▸

round down to the previous integer.



▸

round up to the next integer.



▸

assume that the population variances are equal and usev=n1+n2– 2.



▸

change the sample sizes until the number of degrees of freedom is an integer.

Textbook 
Introductory Statistics: A Problem-Solving Approach

Introductory Statistics: A Problem-Solving Approach


Edition: 3rd
Author:
Read 30 times
1 Reply
Replies
Answer verified by a subject expert
astroasisastroasis
wrote...
#1
Posts: 132
Rep: 1 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

doggerfresh Author
wrote...

A year ago
This helped my grade so much Perfect
deathwing
wrote...

Yesterday
Good timing, thanks!
Starfiew
wrote...

2 hours ago
Helped a lot
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  1202 People Browsing
 103 Signed Up Today
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Related Images
  
 2577
  
 1965
  
 208
Your Opinion
Previous poll results: Do you believe in global warming?