med at any point until time has expired. The timer will continue to run if you leave the test. Completion This test does not allow backtracking. Changes to the answer after submission are prohibited. Your answers are saved automatically. Remaining Time: 23 minutes, 20 seconds. Question Completion Status: A Moving to the next question prevents changes to this answer. Question 4 of 7 > Question 4 8 points Save Answer Olivia wants to know whether watching TV affects concentration. To that end, she recruits a sample of 64 people and has them all watch 2 hours of TV. Right after watching, Olivia administers a concentration test to her sample. Olivia knows that people in general tend to score 80 on this concentration test, on average. If Olivia's sample scores 77, on average, with standard deviation 16, does watching TV significantly affect concentration? a = 0.05 a) State the null and alternative hypotheses in words. ) Locate the critical value that defines the critical region. c) Calculate your statistic. d) Make a decision with respect to the null. ) Write a concluding statement in everyday language. f) If you rejected the null, don't forget to calculate the effect size. If you failed to reject the null, skip this part of the question. For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac). BIUS Paragraph v Arial 10pt ... X2 X2 MacBook Air A F9 F10 F11 F12 F6 E7 F3 F4 F5 # D % 9 O A 5 6 8 3 O P E T Y U D G H J K .V N M X B T