Exam 2 Sample problems

# Exam 2 Sample problems - Sample Exam 2 Open-Book Problem 1...

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Sample Exam 2 Open-Book Problem 1 Fill in the blanks in the following ANOVA table: Source SS DF MS F Total 1.441 12 Regression 0.037

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Sample Exam 2 Open-Book Problem 2 A clinical study of streptococcal meningitis in infants was conducted. Three groups of infants were identified: (1) Meningitis - the infants in this group showed signs of meningitis; (2) Sepsis - infants in this group had developed a very severe infection throughout the body; and (3) Asymptomatic - this was a control group, consisting of infants who showed no signs of infection. A blood sample was drawn from each infant, and the concentration of a particular antigen was determined. Below are the concentrations in μ g/ml. All 18 infants averaged 1.412 μ g/ml, with a variance of 0.195 (μg/ml) 2 . Test to determine if antigen concentration is the same for all three groups. Antigen Concentration (μg/ml) Meningitis Sepsis Asymptomatic 1.21 1.51 1.56 1.34 1.78 1.06 1.95 1.45 0.87 2.27 1.13 1.39 0.88 1.87 0.71 1.67 1.89 0.87 mean 1.553 1.605 1.077 sd 0.510 0.297 0.332
Sample Exam 2

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