Question 15 Using prenumbered checks and having an approved invoice for each check is an example of independent internal verification. O segregation of duties. O documentation procedures. O establishment of responsibility. Click if you would like to show Work for this question: Open Show Work Question 17 The following information is available for Edmiston Company. Beginning accounts receivable Ending accounts receivable Net sales $70,000 110,000 990,000 Compute the accounts receivable turnover and the average collection period. (Round average collection period to 1 decimal places, e.g. 15.2.) Accounts receivable turnover times Average collection period days Click if you would like to Show Work for this question: Open Show Work