× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
2
g
1
D
1
Home Q & A Board Science-Related Homework Help Mathematics
New Topic  
Acostak1 Acostak1
wrote...
Go to Answer
Posts: 842
Rep: 0 0
6 years ago
A random sample of 100 credit sales in a department store showed an average sale of 120.00 . From past data, it is known that the standard deviation of the population is 40.00.
 a. Determine the standard error of the mean.
  b. With a .95 probability, determine the margin of error.
  c. What is the 95 confidence interval of the population mean?
Read 148 times
7 Replies
Replies
Answer verified by a subject expert
somedaysundaysomedaysunday
wrote...
#1
Top Poster
Posts: 1170
Rep: 6 0
6 years ago
Sign in or Sign up in seconds to unlock everything for free

Related Topics

wrote...
#2
3 years ago
Thanks
wrote...
#3
3 years ago
Thanks.
wrote...
#4
3 years ago
thanks
wrote...
#5
3 years ago
Thank you
wrote...
#6
3 years ago
ty
wrote...
#7
3 years ago
thank you
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  853 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 379
  
 376
  
 360
Your Opinion
Which 'study break' activity do you find most distracting?
Votes: 820
Previous poll results: How often do you eat-out per week?