A researcher would like to determine the proportion of cities that has a semiautomated waste management system. The student wants to estimate the population proportion with a margin of error of .10, prefers a level of confidence of 90%, and has no estimate for the population proportion. What is the required sample size?    A. 67 B. 68 C. 69 D. 70

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Chapter1: Starting With Matlab
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A researcher would like to determine the proportion of cities that has a semiautomated waste management system. The student wants to estimate the population proportion with a margin of error of .10, prefers a level of confidence of 90%, and has no estimate for the population proportion. What is the required sample size
 
A. 67
B. 68
C. 69
D. 70
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