PLEASE HELP! CAN SOMEONE CHECK THIS AND TELL ME WHICH ONES ARE WRONG PLEASE NO FILES! THANK YOU!

Based on what i know about mean, this doesn't add up.

Little’s law firm has just one lawyer. customers arrive randomly at an average rate of 6 per 8 hour workday. service times have a mean of 50 minutes and a standard deviation of 20 minutes. how long does a customer spend at little’s law firm on average?

Which of these could you find on a credit report? check all that apply. previous address current employer highest level of education completed bankruptcy and a civil court case monthly income late credit card payments