11/5/2016 Quiz: ch. 11. EXERCISES ch. 11. EXERCISES Started: Oct 31 at 3:57am Quiz Instructions These are selected chapter exercises to help you with the chapter assignment/quiz. Please be sure to open your assignment early to take a look at the questions. Remember to watch the VIDEO LECTURE EXAMPLE for how to solve step by step both the independent samples design and paired samples design problems you will have in assignment and quiz. Question 1 1 pts With an acknowledgment to Sesame Street, "Which of these things is not like the others, which of these things doesn't belong?" repeated measures natural pairs independent samples matched pairs. Question 2 1 pts "There is no dif ference in the two populations" is a statement of the null hypothesis a onetailed alternative hypothesis a twotailed alternative hypothesis Question 3 1 pts A student conducted a before and after study on college statistics students to see if the course improved ability to reason. In a later study , she used a motherdaughter sample to assess generational dif ferences in attitudes toward abortion. Her two designs are paired, paired https://csn.instructure.com/courses/1279162/quizzes/1766355/take 1/4 11/5/2016 Quiz: ch. 11. EXERCISES paired, independent independent, independent independent, paired. Question 4 1 pts For a twosample t test, an ef fect size that qualifies as large is 0.05 0.20 0.80 all of the descriptive alternatives are correct none of the descriptive alternatives are correct. Question 5 1 pts Thirteen volunteers weighted themselves before and after a two day fast is what specific type of a design? Matched Repeated measures Natural Independent sampling Question 6 1 pts Gerbils were used to assess the ef fect of Natur al Neutral, a drug designed to reduce emotionality in highdrive people. Each of 20 gerbils spent 10 solitary minutes in an open field. The investigator recorded the number of fecal boluses for each animal. Then each animal was given an injection of Natural Neutral and the open field task was repeated. The following data were produced (large numbers indicate high emotionality). https://csn.instructure.com/courses/1279162/quizzes/1766355/take No Drug Drug 2/4 11/5/2016 Quiz: ch. 11. EXERCISES mean number of boluses 6 standard deviation of boluses 8 2 2 The design of this study is paired samples independent samples testing the significance of a correlation none of the other alternatives are correct. Question 7 1 pts This experiment is modeled after part of the data needed to demonstrate the Hawthorne Ef fect. Four assemblyline workers, who normally had two cof fee breaks an d an hour for lunch, participated in a weeklong experiment in which they gave up both cof fee breaks and half their lu nch hour . Productivity (units produced per hour) for these four was measured under both conditions and is shown below . Productivity/hour Leisurely Schedule Rushed Schedule 6 6 3 5 4 5 5 6 The experiment described in this question is is an independent samples design is a paired samples design isn't given in enough detail to determine the design. Question 8 1 pts In that long standing feud between the Hatfields and the McCoys, Old Doc Sawbones has been keeping score. During the last 16 years he noted in his feudian notebook a "degree of injury" measure each time he patched up, https://csn.instructure.com/courses/1279162/quizzes/1766355/take 3/4 11/5/2016 Quiz: ch. 11. EXERCISES sewed up, or made a coroner's report on anyone in the two families. Summary statistics were: Hatfields McCoys 41 34 N 6 8 16 16 The design of the study described above is independent samples paired samples comparing a sample mean to a population mean not enough information is given. Quiz saved at 3:07am https://csn.instructure.com/courses/1279162/quizzes/1766355/take Submit Quiz 4/4