× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
a
5
k
5
c
5
B
5
l
5
C
4
s
4
a
4
t
4
i
4
r
4
r
4
Home Q & A Board Science-Related Homework Help Mathematics
New Topic  
Haydena Haydena
wrote...
Go to Answer
Posts: 826
Rep: 0 0
6 years ago
A university has 5,000 students. The manager of food services at the university is interested in determining the total lunch expenditure. A simple random sample of 121 lunch receipts was selected. The sample showed an average of 3 with a standard deviation of 0.40.
 a. Estimate the standard error of the sample mean.
  b. Develop an approximate 95 confidence interval for the population mean.
  c. Estimate the population's total expenditure for lunch.
  d. Develop an approximate 95 confidence interval for the total expenditure for lunch.
Read 75 times
1 Reply
Replies
Answer verified by a subject expert
kwengertkwengert
wrote...
#1
Top Poster
Posts: 1182
Rep: 7 0
6 years ago
Sign in or Sign up in seconds to unlock everything for free
1

Related Topics

Haydena Author
wrote...

6 years ago
Thanks
kobbhy
wrote...

Yesterday
Brilliant ツ
Butwhy
wrote...

2 hours ago
You make an excellent tutor!
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  882 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 208
  
 186
  
 334
Your Opinion
What percentage of nature vs. nurture dictates human intelligence?
Votes: 431
Previous poll results: Which industry do you think artificial intelligence (AI) will impact the most?