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Name: A poll found that people from the north now have relatively warm feeli
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Description: A poll found that people from the north now have relatively warm feelings toward people from the south. A poll, conducted by telephone among a random sample of 1249 adults, found that 737 of those sampled consider the two regions friends. The margi

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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A poll found that people from the north now have relatively warm feelings toward people from the south. A poll, conducted by telephone among a random sample of 1249 adults, found that 737 of those sampled consider the two regions friends. The margin of error for the poll was plus or minus

2.7 percentage points (for a 0.95 confidence level). Use this information to obtain a 95% confidence interval for the percentage of all northerners who consider the two regions friends.

1)The 95% confidence interval is from negative ___% to ___%.

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