A 2015 survey shows that 45% of Snapchat users are between 18 and 24 years old. Suppose a folow-up survey were recently conducted to investigate if the proportion had changed and that out of a random sample of 225 Snapchat users, it found that 123 users wero between 18 and 24 years old Using a = 0.01, complete parts a through c. a. State the null and alternative hypothesis. Let p be the population proportion. Determine the nuli hypothesis, Ho, and the alternative hypothesis, H. Ho: P (Type integers or decimals. Do not round.) b. What conclusions can be made about the proportion of Snapchatters between 18 and 24 years of age? Identity the critical value. (Round to two decimal places as needed.) Calculate the appropriate test statistic. Z,- (Round to two decimal places as needed.) What is the final conclusion? Beiect H. There is not enough evidence to conclude that the proportion of Snapchat users between 18 and 24 years old has changed nid has changed
A 2015 survey shows that 45% of Snapchat users are between 18 and 24 years old. Suppose a folow-up survey were recently conducted to investigate if the proportion had changed and that out of a random sample of 225 Snapchat users, it found that 123 users wero between 18 and 24 years old Using a = 0.01, complete parts a through c. a. State the null and alternative hypothesis. Let p be the population proportion. Determine the nuli hypothesis, Ho, and the alternative hypothesis, H. Ho: P (Type integers or decimals. Do not round.) b. What conclusions can be made about the proportion of Snapchatters between 18 and 24 years of age? Identity the critical value. (Round to two decimal places as needed.) Calculate the appropriate test statistic. Z,- (Round to two decimal places as needed.) What is the final conclusion? Beiect H. There is not enough evidence to conclude that the proportion of Snapchat users between 18 and 24 years old has changed nid has changed
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
3

Transcribed Image Text:A 2015 survey shows that 45% of Snapchat users are between 18 and 24 years old. Suppose a follow-up survey were recently conducted to investigate if the
proportion had changed and that out of a random sample of 225 Snapchat users, it found that 123 users were between 18 and 24 years old Using a =0.01,
complete parts a through c.
a. State the null and alternative hypothesis.
Let p be the population proportion. Determine the null hypothesis, Ho, and the alternative hypothesis, H
Ho: P
(Type integers or decimals. Do not round.)
b. What conclusions can be made about the proportion of Snapchatters between 18 and 24 years of age?
Identify the critical value.
(Round to two decimal places as needed.)
Calculate the appropriate test statistic.
Z,-(Round to two decimal places as needed.)
What is the final conclusion?
O A. Reject Ho. There is not enough evidence to conclude that the proportion of Snapchat users between t8 and 24 years oid has changed
O B. Reject Ho. There is enough evidence to conclude that the proportion of Snapchat users between 18 and 24 years old has changed.
OC. Do not reject Ha. There is not enough evidence to conclude that the proportion of Snapchat users between 18 and 24 years old has changed
Expert Solution

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 2 steps with 2 images

Recommended textbooks for you

MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc

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
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning

MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc

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
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning

Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON

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
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman