× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
L
3
d
3
y
3
a
3
n
3
d
3
e
3
d
3
c
3
p
3
M
3
a
3
Home Q & A Board Science-Related Homework Help Psychology
New Topic  
sneakykitti sneakykitti
wrote...
Posts: 515
Rep: 0 0
6 years ago
One sample with n = 4 scores has a mean of M = 12, and a second sample with n = 6 scores has a mean of M = 8. If the two samples are combined, what is the weighted mean for the combined set of scores?
 
  A) 4.8
  B) 9.6
  C) 10.0
  D) 19.2

Question 2

A population has a mean of  = 30. If 3 points are added to each score, what is the mean for the new distribution?
 
  A) 3
  B) 27
  C) 30
  D) 33
Read 60 times
1 Reply

Related Topics

Replies
wrote...
#1
6 years ago
Answer to q. 1

B

Answer to q. 2

D
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  1105 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 357
  
 297
  
 222
Your Opinion
Where do you get your textbooks?
Votes: 447
Previous poll results: Which country would you like to visit for its food?