USA today report that among 6028 adults observed in restrooms, 85%washed their hands. the margin of...
USA today report that among 6028 adults observed in restrooms, 85%washed their hands. the margin of error is 1 %point. what is range of values or confidence interval to contain the true value of the population parameters
Homework Answers
Given that, sample size ( n )= 6028
sample proportion 
=
0.85
margin of error ( E ) = 1% = 0.01
Therefore, the confidence interval for the population proportion ( p ) is,
Therefore, required confidence interval is, (0.84, 0.86)
In percentage : ( 84% , 86% )
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