Lauren is estimating the number of students at her school who like to order pizza from the school's cafeteria. She needs to create a random sample of students. How should Lauren collect her sample? Lauren should visit a pizza restuarant and risk 50 people waht their favorite topping is.

Lauren should ask the first 50 students who order pizza from the cafeteria

Lauren should ask any 50 students from her school

Lauren should ask 50 students who bring their lunch home on a day when the cafeteria serves pizza

Acaterer knows he will need 60, 50, 80, 40 and 50 dinner napkins on five successive evenings. he can purchase new napkins initially at 25 cents each, after which he can have dirty napkins laundered by a fast one-day laundry service (i.e., dirty napkins given at the end of the day will be ready for use the following day) at 15 cents each, or by a slow two-day service at 8 cents each or both. the caterer wants to know how many napkins he should purchase initially and how many dirty napkins should be laundered by fast and slow service on each of the days in order to minimize his total costs. formulate the caterer’s problem as a linear program as follows (you must state any assumptions you make): a. define all variables clearly. how many are there? b. write out the constraints that must be satisfied, briefly explaining each. (do not simplify.) write out the objective function to be minimized. (do not simplify.)