In a very large school district, student records have been kept in three distinct databases, one each for elementary, middle, and high school. The district now has a newdata base and wishes to correct any original data entry errors. To allocate enoughsecretarial time to this task, an estimate of the proportion of records that containerrors must be made. Initial estimates are that there are fixable errors in about 15% ofthe records.a) Using 15% as an initial estimate of the percentage of records with errors, computethe sample size required to estimate the true proportion of records with errorswithin .025 with 95% confidence.b) Suppose the school district did not have an initial estimate of p. In a fewsentences, explain how your procedure for choosing a samples size would differfrom your solution in part (a). (Do NOT recalculate a new estimate of thenecessary sample size!)

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The Answer of In a very large school district, student records have been kept in three distinct databases, one each for elementary, middle, and high school. The district now has a newdata base and wishes to correct any original data entry errors. To allocate enoughsecretarial time to this task, an estimate of the proportion of records that containerrors must be made. Initial estimates are that there are fixable errors in about 15% ofthe records.a) Using 15% as an initial estimate of the percentage of records with errors, computethe sample size required to estimate the true proportion of records with errorswithin .025 with 95% confidence.b) Suppose the school district did not have an initial estimate of p. In a fewsentences, explain how your procedure for choosing a samples size would differfrom your solution in part (a). (Do NOT recalculate a new estimate of thenecessary sample size!)

In a Very Large School District, Student Records Have Been