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An auditor for a government agency is assigned to the task of

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An auditor for a government agency is assigned to the task of evaluating reimbursement for office visits to doctors paid by Medicare. The audit is to be conducted for all Medicare payments in a particular area during a certain month. An audit is conducted on a sample of 75 of the reimbursements with the following results.;Average amount of reimbursement $93.70;Standard deviation of reimbursement $34.55;Number of reimbursements where an;incorrect amount was provided 12;a. At the 0.05 level of significance, is there evidence that the proportion of incorrect reimbursements in the population is greater than 10%? What is the p-value of the test?;b. What is the smallest sample size needed to estimate the mean amount reimbursed to within 50 cents with 90% confidence, if a preliminary study indicates that the sample standard deviation of all amounts reimbursed is $3.00

 

Paper#27676 | Written in 18-Jul-2015

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