Homework Help is Here – Start Your Trial Now!
Math
Statistics
Question 5 A 2020 survey of 1,250 American adults indicates that 77% of cell phone owners do their browsing on their phone rather than a computer or other device. a) Calculate a 90% confidence interval for the true proportion of Americans who access the internet on their phones, using the original sample. (i) Point estimate : (ii) 90% Margin of error :

Question 5 A 2020 survey of 1,250 American adults indicates that 77% of cell phone owners do their browsing on their phone rather than a computer or other device. a) Calculate a 90% confidence interval for the true proportion of Americans who access the internet on their phones, using the original sample. (i) Point estimate : (ii) 90% Margin of error :

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter4: Equations Of Linear Functions
Section: Chapter Questions
Problem 8SGR
See similar textbooks
icon
Related questions
Question
Question 5 A 2020 survey of 1,250 American adults indicates that 77% of cell phone owners do their browsing on their phone rather than a computer or other device. a) Calculate a 90% confidence interval for the true proportion of Americans who access the internet on their phones, using the original sample. (i) Point estimate : (ii) 90% Margin of error : (iii) 90% Confidence Interval : b) Interpret the confidence interval in the context of the question. c)Suppose that you'd like to estimate the true proportion of Americans who access the internet on their cell within 2% with 90% confidence. How many people would you have to include in your sample? Use the most conservative sample size.
Transcribed Image Text:Question 5 A 2020 survey of 1,250 American adults indicates that 77% of cell phone owners do their browsing on their phone rather than a computer or other device. a) Calculate a 90% confidence interval for the true proportion of Americans who access the internet on their phones, using the original sample. (i) Point estimate : (ii) 90% Margin of error : (iii) 90% Confidence Interval : b) Interpret the confidence interval in the context of the question. c)Suppose that you'd like to estimate the true proportion of Americans who access the internet on their cell within 2% with 90% confidence. How many people would you have to include in your sample? Use the most conservative sample size.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
Point Estimation, Limit Theorems, Approximations, and Bounds
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.
Recommended textbooks for you
Glencoe Algebra 1, Student Edition, 9780079039897…
Glencoe Algebra 1, Student Edition, 9780079039897…
Algebra
ISBN:
9780079039897
Author:
Carter
Publisher:
McGraw Hill
College Algebra (MindTap Course List)
College Algebra (MindTap Course List)
Algebra
ISBN:
9781305652231
Author:
R. David Gustafson, Jeff Hughes
Publisher:
Cengage Learning
SEE MORE TEXTBOOKS