c) (10 points) You are the owner of a grocery store that sees 55 customers a week. Your rent is $1000 per week. You know that standard deviation for the amount of prot made on each customer is $10 but you don't know the average mean. What should the mean prot for each customer be to make sure you can pay your weekly rent at least 96% of the time (HINT: You need your weekly prot (M) from 55 customers so that P(M 2 1000) 2 96))