× Didn't find what you were looking for? Ask a question
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  
SnowQueen SnowQueen
wrote...
Posts: 777
Rep: 0 0
6 years ago
A random sample of 10 university students was surveyed to determine the amount of time spent weekly at the library. The times are: 13, 14, 5, 6, 8, 10, 7, 12, 15, and 3 . If the times are normally distributed with a standard deviation of 5.2 hours, estimate with 90 confidence the mean weekly time at the library by all university students.
Read 50 times
1 Reply

Related Topics

Replies
wrote...
#1
6 years ago
LCL = 6.59 and UCL = 12.01 hours.
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  1295 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 595
  
 1690
  
 347
Your Opinion
Do you believe in global warming?
Votes: 370
Previous poll results: What percentage of nature vs. nurture dictates human intelligence?