Wetflix Section 9.1 Homework In one city, 27.8% of the 9000 st x+ //cypresscollege.instructure.com/courses/29586/assignments/814917?module_item_id=1906534 120PC > Assignments > Section 9.1 Homework Section 9.1 Homework ces es 34 Due Thursday by 1:20pm Points 15 Submitting an external tool intel Re IRIS GRAPHICE Section 9.1 Homework Score: 7.33/15 9/15 answered Question 10 > You recently sent out a survey to determine if the percentage of adults who use social media has changed from 65%, which was the percentage of adults who used social media five years ago. Of the 3055 people who responded to survey, 1669 stated that they currently use social media. a) Use the data from this survey to construct a 97% 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. O Yes, because the proportion of adults who used social media five years ago is inside of the confidence interval. O Yes, because the proportion of adults who used social media five years ago is not inside the confidence interval. O No, because the proportion of adults who used social media five years ago is inside the confidence interval. O 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? O The percentage increased. The percentage decreased. O We cannot determine that the percentage has changed. Submit Question Q Search DELL Progress saved
Wetflix Section 9.1 Homework In one city, 27.8% of the 9000 st x+ //cypresscollege.instructure.com/courses/29586/assignments/814917?module_item_id=1906534 120PC > Assignments > Section 9.1 Homework Section 9.1 Homework ces es 34 Due Thursday by 1:20pm Points 15 Submitting an external tool intel Re IRIS GRAPHICE Section 9.1 Homework Score: 7.33/15 9/15 answered Question 10 > You recently sent out a survey to determine if the percentage of adults who use social media has changed from 65%, which was the percentage of adults who used social media five years ago. Of the 3055 people who responded to survey, 1669 stated that they currently use social media. a) Use the data from this survey to construct a 97% 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. O Yes, because the proportion of adults who used social media five years ago is inside of the confidence interval. O Yes, because the proportion of adults who used social media five years ago is not inside the confidence interval. O No, because the proportion of adults who used social media five years ago is inside the confidence interval. O 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? O The percentage increased. The percentage decreased. O We cannot determine that the percentage has changed. Submit Question Q Search DELL Progress saved
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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Section 9.1 Homework
In one city, 27.8% of the 9000 st x+
//cypresscollege.instructure.com/courses/29586/assignments/814917?module_item_id=1906534
120PC > Assignments > Section 9.1 Homework
Section 9.1 Homework
ces
es
34
Due Thursday by 1:20pm
Points 15
Submitting an external tool
intel
Re IRIS
GRAPHICE
Section 9.1 Homework
Score: 7.33/15 9/15 answered
Question 10
>
You recently sent out a survey to determine if the percentage of adults who use social media has changed
from 65%, which was the percentage of adults who used social media five years ago. Of the 3055 people
who responded to survey, 1669 stated that they currently use social media.
a) Use the data from this survey to construct a 97% 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.
O Yes, because the proportion of adults who used social media five years ago is inside of the
confidence interval.
O Yes, because the proportion of adults who used social media five years ago is not inside the
confidence interval.
O No, because the proportion of adults who used social media five years ago is inside the confidence
interval.
O 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?
O The percentage increased.
The percentage decreased.
O We cannot determine that the percentage has changed.
Submit Question
Q Search
DELL
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