You recently sent out a survey to determine if the percentage of adults who use social media has changed from 56%, which was the percentage of adults who used social media five years ago. Of the 2703 people who responded to survey, 1758 stated that they currently use social media.a) Use the data from this survey to construct a 92% confidence interval estimate of the proportion of adults who use social media. Record the result below in the form of (#,#)(#,#). Round your final answer to four decimal places.b) Can you conclude that the percentage of adults who use social media has changed? Explain.Yes, because the proportion of adults who used social media five years ago is inside of the confidence interval.Yes, because the proportion of adults who used social media five years ago is not inside the confidence interval.No, because the proportion of adults who used social media five years ago is inside the confidence interval.No, because the proportion of adults who used social media five years ago is not inside the confidence interval.c) If it has changed, has it increased or decreased?The percentage increased.The percentage decreased.We cannot determine that the percentage has changed.

(a) The sample proportion is: p= x/n=1758/2703 =0.65 The value of z at 92% confidence level is 1/75,…

Answered: was the percentage of adults who used…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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You recently sent out a survey to determine if the percentage of adults who use social media has changed from 56%, which was the percentage of adults who used social media five years ago. Of the 2703 people who responded to survey, 1758 stated that they currently use social media.

a) Use the data from this survey to construct a 92% confidence interval estimate of the proportion of adults who use social media. Record the result below in the form of (#,#)(#,#). Round your final answer to four decimal places.

b) Can you conclude that the percentage of adults who use social media has changed? Explain.

Yes, because the proportion of adults who used social media five years ago is inside of the confidence interval.
Yes, because the proportion of adults who used social media five years ago is not inside the confidence interval.
No, because the proportion of adults who used social media five years ago is inside the confidence interval.
No, because the proportion of adults who used social media five years ago is not inside the confidence interval.

c) If it has changed, has it increased or decreased?

The percentage increased.
The percentage decreased.
We cannot determine that the percentage has changed.

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