1) prepare a workpaper using substantive analytical precedures to test the reasonableness of interest expense 2) tesla Inc 2020 income statement shows $1,183,000 of interest expense. To conduct a sub-stantive anlayitcal procedure on this account, the auditor could develop an expectation using reasonableness analysis by building a model in the following manner. Obtain the ending monthly balance for the short term line of credit from the monthly loan statement and calculate the average monthly ending balance. Trace the monthly loan balances to the general ledger. Determine the average interest rate for the year for the short term line of credit based on the bank's published rate in the monthly bnak loan statement. Multiply the average mohtly balance previously calculated by the average interest rate, and compare to the result to the recorded interest expenses. From the monthly loan statement and traced to the General ledger (in thousands) Jan $ 41,500 feb $ 38,600 mar $ 28,100 Apr $ 27,900 May $ 26,100 Jun $ 25,500 w Jul $ 20 24,200 $ Aug 20200 30,200 Sep $ A CON 44,500 Oct $ 38,100 Nov $ 25,200 Dec $ 31,000 Total $ 380,900 calculate the average assume that the interest rates recorded on the loan statements have remained stable over the year, flucuating between 4 and 5.25. If the auditor uses 4.875% as the ave interest rate. Be sure to develop your expectation Assume 5% of recorded balance is the tolerable difference Is the difference of the expectation and recorded amount acceptible or do you need to do more work? What is your conclusion