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fDesc[0] = "SampleXS is a program that you can use to help you calculate the required sample size for a cross-sectional health survey. In this exercise you will use SampleXS to calculate a sample size for a prevalence survey of a health condition.<br /> Start SampleXS and enter these values into the relevant data-entry boxes (SampleXS assumes that the maximum error (i.e. the margin of error or required precision) specified is for a 95% confidence interval.";

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