A restaurant just leased a new freezer and food fryer for three years. The service contract for the freezer offers unlimited repairs for a fee of$125 a year plus a$35 service charge for each repair needed. Therestaurant's research indicates that during a given year80% of these freezers need norepairs, 11% needed to be servicedonce, 5%twice, 4% threetimes, and none required more than three repairs. The standard deviation of the number of repairs for this freezer per year is.....