Assume you perform a study to detect how using social networks affects people's hapiness level. You have 20 volunteers. Your study is planned as follows. All participants are known to be active users of social networks. First you ask every participant to fill in special questionary that allows you to estimate their hapiness level. After that all participants will avoid using of social networks for one week. After this week they complete similar questionary to detect their new level of hapiness. Then for each participants their new hapiness level is compared the initial one. Assume that for each participant their hapiness level is changed: either decreased or increased. Let X be the random variable that models the number of participants for who increased their happiness level. Let Xobs = 16, i.e. 16 out of 20 participants become more happy, and it's the only data you can make decision on. Your significance level is 5%.

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
icon
Related questions
Topic Video
Question
• State null hypothesis and an alternative of your research. Explain why you choose this alternative.
• State how X is distributed provided that null hypothesis holds.
• Would you claim that people become happier when they avoid using social networks based on this data?
Provide all necessary calculations, p-values, etc.
Transcribed Image Text:• State null hypothesis and an alternative of your research. Explain why you choose this alternative. • State how X is distributed provided that null hypothesis holds. • Would you claim that people become happier when they avoid using social networks based on this data? Provide all necessary calculations, p-values, etc.
Assume you perform a study to detect how using social networks affects people's hapiness level. You have 20 volunteers.
Your study is planned as follows. All participants are known to be active users of social networks. First you ask every
participant to fill in special questionary that allows you to estimate their hapiness level. After that all participants will avoid
using of social networks for one week. After this week they complete similar questionary to detect their new level of
hapiness. Then for each participants their new hapiness level is compared the initial one. Assume that for each participant
their hapiness level is changed: either decreased or increased. Let X be the random variable that models the number of
participants for who increased their happiness level. Let Xobs = 16, i.e. 16 out of 20 participants become more happy,
and it's the only data you can make decision on. Your significance level is 5%.
Transcribed Image Text:Assume you perform a study to detect how using social networks affects people's hapiness level. You have 20 volunteers. Your study is planned as follows. All participants are known to be active users of social networks. First you ask every participant to fill in special questionary that allows you to estimate their hapiness level. After that all participants will avoid using of social networks for one week. After this week they complete similar questionary to detect their new level of hapiness. Then for each participants their new hapiness level is compared the initial one. Assume that for each participant their hapiness level is changed: either decreased or increased. Let X be the random variable that models the number of participants for who increased their happiness level. Let Xobs = 16, i.e. 16 out of 20 participants become more happy, and it's the only data you can make decision on. Your significance level is 5%.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 3 steps

Blurred answer
Knowledge Booster
Hypothesis Tests and Confidence Intervals for Means
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman