Question

Homework 10 - due Tuesday, April 30. For problcms 1, 3, 4 - you should list assumptions. If we havc two indcpendent samples you should check whether the assumptions for equal variances are satisfied or not, using the formal F test. Problem 3 Researchers investigated the effects of bcing distracted by a game on how much pcople cat. 22 patients in the treatment group who ate their lunch while playing solitaire were asked to do a serial-order recall of the food lunch items they ate. The average numbcr of itcms recalled by the paticnts in this group was 4.9, with a standard deviation of 1.8. The average number of items rccalled by the patients in the control group (also 22 patients, receiving no distraction) was 6.1, with a standard deviation of 1.8 .a) Do these data provide strong cvidence that the avcrage number of food items rccalled by the patients in the treatment and control groups are different? Use a-0.05. b) Answer the question using also a 95% confidence interval.

Answer 1

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