A researcher polled a sample of 1087 adults in the year 2010 , asking them how many hours per week they spent on the Internet. The sample mean was 10.49 with a standard deviation of 14.21 . A second sample of 1046 adults was taken in the year 2012 . For this sample, the mean was 9.45 with a standard deviation of 13.89 . Assume these are simple random samples from populations of adults. Can you conclude that the mean number of hours per week spent on the Internet differs between 2010 and 2012 ? Let μ1 denote the mean number of hours spent on the Internet in 2010 . Use the =α0.10 level and the P -value method with the TI-84 calculator.
A researcher polled a sample of 1087 adults in the year 2010 , asking them how many hours per week they spent on the Internet. The sample mean was 10.49 with a standard deviation of 14.21 . A second sample of 1046 adults was taken in the year 2012 . For this sample, the mean was 9.45 with a standard deviation of 13.89 . Assume these are simple random samples from populations of adults. Can you conclude that the mean number of hours per week spent on the Internet differs between 2010 and 2012 ? Let μ1 denote the mean number of hours spent on the Internet in 2010 . Use the =α0.10 level and the P -value method with the TI-84 calculator.
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 26PFA
Related questions
Question
A researcher polled a sample of
1087
adults in the year
2010
, asking them how many hours per week they spent on the Internet. The sample mean was
10.49
with a standard deviation of
14.21
. A second sample of
1046
adults was taken in the year
2012
. For this sample, the mean was
9.45
with a standard deviation of
13.89
. Assume these are simple random samples from populations of adults. Can you conclude that the mean number of hours per week spent on the Internet differs between
2010
and
2012
? Let
μ1
denote the mean number of hours spent on the Internet in
2010
. Use the
=α0.10
level and the
P
-value method with the TI-84 calculator.
Expert Solution
![](/static/compass_v2/shared-icons/check-mark.png)
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 4 steps with 1 images
![Blurred answer](/static/compass_v2/solution-images/blurred-answer.jpg)
Recommended textbooks for you
![Glencoe Algebra 1, Student Edition, 9780079039897…](https://www.bartleby.com/isbn_cover_images/9780079039897/9780079039897_smallCoverImage.jpg)
Glencoe Algebra 1, Student Edition, 9780079039897…
Algebra
ISBN:
9780079039897
Author:
Carter
Publisher:
McGraw Hill
![Big Ideas Math A Bridge To Success Algebra 1: Stu…](https://www.bartleby.com/isbn_cover_images/9781680331141/9781680331141_smallCoverImage.jpg)
Big Ideas Math A Bridge To Success Algebra 1: Stu…
Algebra
ISBN:
9781680331141
Author:
HOUGHTON MIFFLIN HARCOURT
Publisher:
Houghton Mifflin Harcourt
![Holt Mcdougal Larson Pre-algebra: Student Edition…](https://www.bartleby.com/isbn_cover_images/9780547587776/9780547587776_smallCoverImage.jpg)
Holt Mcdougal Larson Pre-algebra: Student Edition…
Algebra
ISBN:
9780547587776
Author:
HOLT MCDOUGAL
Publisher:
HOLT MCDOUGAL
![Glencoe Algebra 1, Student Edition, 9780079039897…](https://www.bartleby.com/isbn_cover_images/9780079039897/9780079039897_smallCoverImage.jpg)
Glencoe Algebra 1, Student Edition, 9780079039897…
Algebra
ISBN:
9780079039897
Author:
Carter
Publisher:
McGraw Hill
![Big Ideas Math A Bridge To Success Algebra 1: Stu…](https://www.bartleby.com/isbn_cover_images/9781680331141/9781680331141_smallCoverImage.jpg)
Big Ideas Math A Bridge To Success Algebra 1: Stu…
Algebra
ISBN:
9781680331141
Author:
HOUGHTON MIFFLIN HARCOURT
Publisher:
Houghton Mifflin Harcourt
![Holt Mcdougal Larson Pre-algebra: Student Edition…](https://www.bartleby.com/isbn_cover_images/9780547587776/9780547587776_smallCoverImage.jpg)
Holt Mcdougal Larson Pre-algebra: Student Edition…
Algebra
ISBN:
9780547587776
Author:
HOLT MCDOUGAL
Publisher:
HOLT MCDOUGAL