× 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  
arichman7730 arichman7730
wrote...
Go to Answer
Posts: 753
Rep: 0 0
6 years ago
A grocery store has an average sales of 8000 per day. The store introduced several advertising campaigns in order to increase sales. To determine whether or not the advertising campaigns have been effective in increasing sales, a sample of 64 days of sales was selected. It was found that the average was 8300 per day. From past information, it is known that the standard deviation of the population is 1200 . The value of the test statistic is
 a. .25.
  b. 80.00.
  c. 8.25.
  d. 2.00.
Read 60 times
1 Reply
Replies
Answer verified by a subject expert
suarezs1suarezs1
wrote...
#1
Top Poster
Posts: 1195
Rep: 16 0
6 years ago
Sign in or Sign up in seconds to unlock everything for free
1

Related Topics

arichman7730 Author
wrote...

6 years ago
This site is awesome
noodlelicker
wrote...

Yesterday
Thanks
deathwing
wrote...

2 hours ago
I appreciate what you did here, answered it right Smiling Face with Open Mouth
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  1484 People Browsing
 124 Signed Up Today
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Related Images
  
 180
  
 394
  
 56
Your Opinion
Which country would you like to visit for its food?
Votes: 204
Previous poll results: Which industry do you think artificial intelligence (AI) will impact the most?