Question 5A 2020 survey of 1,250 American adults indicates that 77% of cell phone owners do their browsing on their phone ratherthan 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 cellwithin 2% with 90% confidence. How many people would you have to include in your sample? Use the mostconservative sample size.

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 :

College Algebra (MindTap Course List)

12th Edition

ISBN:9781305652231

Author:R. David Gustafson, Jeff Hughes

Publisher:R. David Gustafson, Jeff Hughes

Chapter8: Sequences, Series, And Probability

Section8.7: Probability

Problem 58E: What is meant by the sample space of an experiment?

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