You plan to construct a 90% confidence interval for the proportion of all middle school students who own a cell phone. You want your interval to have margin of error of 4%. A study done in 2019 showed 69% of kids aged 12 and over had a cell phone. What size sample do you need?

You plan to construct a 90% confidence interval for the proportion of all middle school students who own a cell phone. You want your interval to have margin of error of 4%. A study done in 2019 showed 69% of kids aged 12 and over had a cell phone. What size sample do you need?

Name: You plan to construct a 90% confidence interval for the proportion of
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Description: You plan to construct a 90% confidence interval for the proportion of all middle school students who own a cell phone. You want your interval to have margin of error of 4%. A study done in 2019 showed 69% of kids aged 12 and over had a cell phone.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.6: Summarizing Categorical Data

Problem 30PPS

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