<PRE><B>Question 433384</B>
The monthly starting salaries of students who receive engineering degrees have a standard deviation of $600. What sample size should be selected so that there is 0.95 probability of estimating the mean monthly income within $150 or less? 
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n = [zs/E]^2
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n = [1.96*600/150]^2 
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n = [1.96*4]^2
n = 62 when rounded up
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Cheers,
Stan H.</PRE>