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Problem 2
13.6 Testing Categorical Probabilities: Two-Way (Contingency) Table
Use the table below, which is from a study on vitamin C intake and the common cold, to test if vitamin C intake and colds are independent.
Status Vitamin C Group Placebo Group Total
Children free of colds 21 11 32
Children developing colds 36 35 71
Total 57 46 103
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