Do you own an iPod Nano or a Sony Walkman Bean? These and other brands of MP3
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Do you own an iPod Nano or a Sony Walkman Bean? These and other brands of MP3 players are becoming more and more popular among younger Americans. An iPod survey reported that 54% of 12- to 17-year-olds, 30% of 18- to 34-year-olds, and 13% of 35- to 54-year-olds own MP3 players.6 Suppose that these three estimates are based on random samples of size 400, 350, and 362, respectively.
a. Construct a 95% confidence interval estimate for the proportion of 12- to 17-year-olds who own an MP3 player.
b. Construct a 95% confidence interval estimate for the proportion of 18- to 34-year-olds who own an MP3 player.
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a An approximate 95 confidence i...View the full answer
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Jonas Araujo
I have recently received the degree of PhD. In Physics by the Universidade Federal do Maranhão after spending a term in Durham University, as I have been awarded a scholarship from a Brazilian mobility program. During my PhD. I have performed research mainly in Theoretical Physics and published works in distinguished Journals (check my ORCID: https://orcid.org/0000-0002-4324-1184).
During my BSc. I have been awarded a scholarship to study for a year in the University of Evansville, where I have worked in detection-analysis of photon correlations in the the Photonics Laboratory. There I was a tutor in Electromagnetism, Classical Mechanics and Calculus for most of that year (2012).
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Related Book For 
Introduction To Probability And Statistics
ISBN: 9780495389538
13th Edition
Authors: William Mendenhall, Robert J. Beaver, Barbara M. Beaver
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