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Unformatted text preview: Problem# 4. (4.a) A sample of 150 chronic carriers of a certain antigen and a sample of 500 noncarriers revealed the blood group distributions given below. O A B AB Carriers 72 54 16 8 Noncarriers 230 192 63 15 Researchers want to know whether the two populations from which the samples are drawn dier with respect to blood group distribution. Which type of test is appropriate for the problem? (4.b) A sample of 500 elementary school children in a certain school system were cross-classied by nutritional status and academic performance. Nutritional Status Poor Good Academic Poor 105 15 Performance Satisfactory 80 300 Researchers want to know if they can conclude that there is a relationship between nutritional status and academic performance. Which type of test is appropriate for the problem? 1 Problem# 5. Redo the lab 11 and describe your nding for each example in lab 11. 2...
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- Fall '11