Statistical Tests and Hypotheses. Read each research scenario below, then choose the appropriate statistical test, explain why you chose the test you did, and write the alternative hypothesis. (Statistical test > 1 pt. ea. / Explanation > 2 pts. ea. / HA > 6 pts. ea. = 18 pts. total) 1. Word problems in math have been a plague to elementary school students since the beginning. Different approaches to teaching children how to solve word problems have been tried over the years. Craddock et a1. (2008) compared the effectiveness of three of those teaching approaches - traditional, contemporary, and hot math with at-risk third-graders. After 16 weeks, they tested all the third-graders for their word problem solving ability. Does teaching approach make a difference? 2. Elderly people who suffer from chronic pain have trouble maintaining independent function in their daily lives. Research has demonstrated the effectiveness of music in increasing motivation and enhancing a feeling of being in control among the elderly (McCaffrey & Freeman, 2003). McCaffrey and Freeman designed a study to investigate the effect of music in a sample of Florida residents 65 and older who suffer from chronic osteoarthritis pain. They instructed participants to listen to a 20-minute recording of \"relaxation music\" every day for 14 days in the morning. Each participant assessed his or her pain on days 1, 7, and 14 of the study, immediately after listening to the relaxation music. Is music effective