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 Statistics and Probability
New Topic  
zar zar
wrote...
Go to Answer
Posts: 458
Rep: 1 0
4 years ago
The average American sees 3.9 movies at the theater each year. A curious student polls 30 friends and family over the course of a week. He finds that his friends have seen an average of 4.5 movies with a standard deviation of 1.2 movies.

Does this sample provide evidence that people are attending the movies more often? Provide a complete significance test to support your answer.
Textbook 
Stats: Modeling the World

Stats: Modeling the World


Edition: 4th
Authors:
Read 106 times
8 Replies
Replies
Answer verified by a subject expert
Lori734Lori734
wrote...
#1
Posts: 394
Rep: 59 0
4 years ago
Sign in or Sign up in seconds to unlock everything for free
More solutions for this book are available here
This verified answer contains over 2500 words.
1

Related Topics

zar Author
wrote...
#2
4 years ago
Thanks for your help!
wrote...
#3
4 years ago
The average American sees 3.9 movies at the theater each year. A curious student polls 30 friends and family over the course of a week. He finds that his friends have seen an average of 4.5 movies with a standard deviation of 1.2 movies.

The student insists to his media teacher at school that movie attendance is on the rise. Do you agree with this conclusion?
all is normal
wrote...
#4
4 years ago
Given that this student collected a convenience sample, we are very skeptical about any attempts to generalize it to a larger population.
wrote...
#5
4 years ago
The average American sees 3.9 movies at the theater each year. A curious student polls 30 friends and family over the course of a week. He finds that his friends have seen an average of 4.5 movies with a standard deviation of 1.2 movies.

Find and interpret a 95% confidence interval for this sample.
wrote...
#6
4 years ago
4.5 ± 2.045 = (4.05, 4.95); We are 95% confident that this student's friends see between 4.05 and 4.95 movies per year.
wrote...
#7
4 years ago
This site is awesome!
wrote...
#8
4 years ago
Slight Smile Good luck on the rest
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  1374 People Browsing
 108 Signed Up Today
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Related Images
  
 380
  
 833
  
 246
Your Opinion
Do you believe in global warming?
Votes: 370
Previous poll results: Who will win the 2024 president election?