3. Identify each of the following samples by naming the sampling technique used. Select from simple random, cluster, convenience, systematic, or stratified. (3 points each) a) Divide the users of an online dating service into different age groups and then select a random sample from each age group. Ask the users about the number of dates they have had as a result of the service. b) Survey the students leaving the Rockland Community College cafeteria on a given day about the prices of the food there. c) Select ten zip codes at random in Rockland County and include every household from those zip codes. d) Ask every fifth person entering a health club about his/her preferred method of exercise