Classwork 1: Chapter 1 1) Identify which of these types of sampling is used: random, systematic, convenience, stratified, or cluster. Explain a) A student of the author collected measurements of arm lengths from her family members. b) On the day of last presidential election, ABC New organized an exit poll in which specific polling stations were randomly selected and all voters were surveyed as they left the premises. The Federal-Mogul Company manufactures Champion brand spark plugs. The procedure for quality control is to test every 100t spark plug from the assembly line. The author once experienced a tax audit by a representative from the New York State Department of Taxation and Finance, which claimed that the author was randomly selected as part of a \"statistical\" audit. (Isn't that ironic?) The representative was a very nice person and a credit to humankind. The author once observed professional wine tasters working at the Consumer's Union testing facility in Yonkers. Assume that a taste test involves three different wines randomly selected from each of five different wineries. Identify the class width, class midpoints and class boundaries for the give data set below. Construct the frequency table. Use 7 classes. 72 88 72 68 80 64 68 76 68 96 72 68 72 80 80 76 76 80 104 88 76 72 88 60 72 88 88 64 Classes Frequency Relative Frequency