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The question below relates to estimating the sample size necessary for tests of controls, given the specified decisions for the considerations that affect sample
The question below relates to estimating the sample size necessary for tests of controls, given the specified decisions for the considerations that affect sample size. Situation Required Confidence Level (%) Tolerable Error (%) Expected number of errors 0 0 0 2 1 3 i ii iii IV V vi equi Required: i) For each of the situations above, what is the initial sample size for the test of controls? ii) Based on your understanding of the relationships between the factors above and sample size, explain the effect of changing each of the following while the others remain unchanged. Required confidence level is decreased. 90 95 90 90 95 90 Tolerable error is decreased. Number of deviations expected increases. Population size increases. - 7 7 12 12 25 10
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