[The following information applies to the questions displayed below.] Find a Doctor, or FaD, is a small startup that helps people find a physician that best meets their needs (location, insurance accepted, etc.). During a "slow" time for them, they have 7 staff members taking calls from customers. On average, one call arrives every 6 minutes (with a standard deviation of 6). Each staff member spends 20 minutes with each customer (on average, with a standard deviation of 30) How long (in minutes) does a customer spend on average waiting on hold before they can start speaking to a representative from FaD? (Round the answer to 2 decimal places.) Customer spend on average minutes