You are planning the confirmation of accounts receivable for an audit client. The balance is material to the client's overall financial statements. There are 7,500 customer accounts with a total book value of $12,000,000. The risk of incorrect acceptance is 5%. Tolerable misstatement is set at $400,000. Expected misstatement is $50,000. a What is the sample size? b. What is the sampling interval? C. There were 3 overstatement errors in your sample. Calculate factual misstatement in the top stratum, basic precision, projected misstatement in lower stratum, incremental allowance for sampling risk in lower stratum, and total estimated misstatement. The errors were as follows: Audit value Book value $95.000 40,000 25.000 $70,000 30,000 21,000