A random sample of 151 students was asked how many songs were in their digital music library and what fraction of them was legally purchased. Overall, they reported having a total of 112,445 songs, of which 25.3% were legal. A research group found that a 95% confidence interval for the fraction of songs in students' digital music libraries that are legal is (25.0%,25.6%). The research group that conducted this survey wants to provide the music industry with definitive information but they believe that they could use a smaller sample next time. If the group is willing to have three times as big a margin of error, how many songs must be included? A total of songs must be included. (Type a whole number.)

A random sample of 151 students was asked how many songs were in their digital music library and what fraction of them was legally purchased. Overall, they reported having a total of 112,445 songs, of which 25.3% were legal. A research group found that a 95% confidence interval for the fraction of songs in students' digital music libraries that are legal is (25.0%,25.6%). The research group that conducted this survey wants to provide the music industry with definitive information but they believe that they could use a smaller sample next time. If the group is willing to have three times as big a margin of error, how many songs must be included? A total of songs must be included. (Type a whole number.)

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Description: A random sample of 151 students was asked how many songs were in their digital music library and what fraction of them was legally purchased. Overall, they reported having a total of 112,445 songs, of which 25.3% were legal. A researchgroup found th

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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