1. What is random sampling? With respect to research, why is it preferable to biased sampling methods? 2. What is a correlation? Does it allow researchers to make causative statements? Why or why not? 3. The following data represent the number of minutes it takes for a 6-year old and a 2-year old to fall asleep after being tucked in by their parent at night over a 1-week period: 6-year old: 5, 10, 11, 6, 20, 12, 7 2-year old: 17, 37, 17, 26, 13, 27, 24 Please answer the following questions (a-c below are worth 1 point each): a. What are the M and SD minutes per night for the 6-year old? b. What are the M and SD minutes per night for the 2-year old? c. What is the specific statistical analysis that should be used if one wished to compare these two means? 4. A researcher conducts a study in which he compares how men and women perform on the Law School Admissions Test (LSAT). As part of his study, he arranges for half the participants of each gender to either complete an LSAT prepatory course or receive no prepatory course. What specific research design is he using? 5. Please explain what regression analysis is - include in your answer a statement about how predictor and criterion variables are used, as well as an explanation of what beta-weights are. Also, please provide an original example of multiple regression (you must explicitly state what your predictor and criterion variables are). 6. Please describe the difference between a within subjects and between subjects variable. In addition, please provide detailed and specific explanations of original and unique examples for each of the following factorial designs (a-c below are worth 1 point each): a. a 2 x 3 Mixed Factorial Design b. a 3 x 3 Repeated Measures Factorial Design c. a 2 x 2 Between Subjects Factorial Design