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formula for calculating sample size pdf. 3 Power-based sample size calculations We have seen above that precision-based sample size calculations relate to estimation. Following preceding two steps it is easy to decide on which sample size formula is appropriate for the objective.
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S Z 2 P Q E 2. Therefore the sample size can be calculated using the above formula as 10000 196 2 005 1-005 005 2 10000 1 196 2 005 1-005 005 2 Therefore a size of 72 customers will be adequate for deriving meaningful inference in this case. A 95 confidence level andP5are assumed for Equation 5.
A 95 confidence level andP5are assumed for Equation 5.
S Z 2 P Q E 2. N signifies the population under study. P prevalence of the problem prevalence of. Additionally there are also some different procedures for calculating the sample size for two approaches of drawing statistical inference from the study results on the basis of confidence interval approach and test of significance approach.
