3323 4 Search tTest HW FA21 PSYZSIO, Statistical Methods of Psychology, Fall 2021 Homework. Chapter 10, t-'lest for Two Independent Samples Note: This homework is worth 10 points! Take your time. be careful. and follow all of the instructions. A researcher wants to test whether soccer players have neurological deficits due to frequent heading of the soccer ball compared to swimmers {the control group). She uses a neurological exam where lower snares indicate lower function; the hypothesis is that sooner players would have lower scores. Use the independent t-Test with a = 0.05 to determine whether there is a significant difference You will need to explain how you came to a conclusion there isa difference, which should be based on obtained and critical values. Explain how you found the correct critical value in the table. Swimmers Soccer Players 10 8 'l' 9 13 'l' 6 12 9 Make sure you: Start with the formulas for W [though see belowi. This includes means and degrees of freedom. Use tablesl You do not need to have formulas for E X and 55 just indicate they are the sums at the bottom of the appropriate columns in your table. You will need two different tables to solve this. Keep track of when to use n. df for the individual samples. and of for the overall test. Write your obtained t statistic correctly tie. t(d'=...] Keep the order of your samples straight throughout the problem. For example, if you use swimmers for group one and soccer players for group two, your obtained and critical values will be different than if you used swimmers for group two and sooner players for group one [order for 55, d}, and n in the intermediate calculations will depend on this choice as well]. The absolute vdue plthe {statistic ls 1.19. The sign will depend on how you set up the problem. You will still need to calculate everything - this value is givenjust so you can check your worlr once you are done. Don't skip the formula to calculate this