t-Tests For this assignment, you MUST show your work. Points will be taken off if you do not show your work for calculations. Give details for numbers 2 and 3, give reasons for why you would do a one-tailed, or two-tailed test. 1. For each study indicate if the study is repeated measures or not. Study Repeated Measures? Yes or No? a. A researcher is comparing the amount of time spent playing video games each week for college males versus college females. b. A researcher is evaluating the effects of fatigue by testing people in the moming when they are well rested and testing again at midnight when they have been awake for at least 14 hours. c. A researcher is comparing two new designs for cell phones by having a group of high school students send a scripted text message on each model and measuring the difference in speed for each student. d. A study that splits half the class and has the rst half study and the second half of the class not study for an exam to compare exam scores. 2. A sample of n = 4 individuals is selected from a population with a mean of u =40. A treatment is administered to the individuals in the sample and, after treatment, the sample has a mean of M = 44 and a variance of s2 = 16. Answer Table Which kind of t-Test should be used? Does this require a one-tailed test or a two- tailed test? What is the sample size? What are the degrees of freedom? What is the critical value ifsignicance is set at p