Benjamin, the auditor, would like to find out the mean debtor's age for all debtors of ABC Pty Ltd, the audit client. He takes a random sample of five debtors' ages from ABC's accounts receivable subsidiary ledger as following,

Debtors' list	Age
Customer A	17
Customer B	37
Customer C	60
Customer D	18
Customer E	17

ABC company has trading terms of 2/30, n/45. Calculate and enter the lower bound of the 95% confidence interval for the mean debtor's age for all debtors of ABC in the answer block below. (Round up answer to integer number)