All 20 student's in Mrs. Robinson's 1 th grade class put their name in a hat each day, Mrs. Robinson randomly selects a name... . and that student gets to pass out papers for a day. if there are 180 school days in the year, how many times do you think each student will get to be the ''paper-passer?''

At the beginning of a call to the cable company, a message tells customers, "after you finish talking to our customer service representative, you will be asked to take a five-question survey about the level of service you recieved. it would be appreciated if you could stay on the line to answer the survey questions." what type of sampling is the cable company using?