## Question 214:

I am charged with sampling expense report submissions for accuracy. We get 8000 T&E claims, and want to sample a subset making inferences about the population. I can probably get a good estimate of the populations' SD, how would i calculate required sample size? I think i would be measuring the delta between actual and claimed - the majority be 0. Is this a one sided issue? Thanks in advance - FTAlso, would i need the acceptable level first? ie. we would accept an average difference of $5?

How can i work backwards if the first sample size yields an average of $1? (if that made sense)

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