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Unformatted text preview: pedometer experience fewer symptoms of depression when toted 2 years later. Following are hypothetical data dimple to the results obtained in the study. (i) Calculate the mean and standard deviation for each group (show your work) and draw a density curve for each group (a line graph like the one of page 94 except corresponding to the scores for each group). Have one graph with two density curves on it. (ii) Based on the statistics and the graph, does there appear to be a difference between the two groups (i.e., an effect of exercise on depression). Very briefly explain your answer. DEPRESSION SCORES No Regular Exercis e 5 4 6 3 5 7 6 6 Laughlin, Stat 371, EC 1 page 2  Page 69, Problem 2.78. Page 83, Problem 3.3. Page 88. Problem 3.11 Page 95, Problem 3.15. Set up the problems using probability notation and show as many mathematical steps as possible. Page 102, Problem 3.22 and 3.33...
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 Spring '08
 KOSCIK
 Statistics, Normal Distribution, Standard Deviation, line graph

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