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Hi,
He observes that work expands so as to fill the time available for its completion.

sample size is a very important feature in any empirical data analysis. its very important as it helps in making

inferences about a sample.

the formulas used are

ss=Z^2* (p) * (1-p)/c^{2}

^{Z = Z value (confidence level) p = percentage picking a choice, expressed as decimal (.5 used for sample size needed)c = confidence interval, expressed as decimal }

^{for a finite population we will have }

^{new ss=ss/ss-1/1+pop}

^{pop refers to population}

Please let me know if you need any clarification. I'm always happy to answer your questions.