Effectiveness of New Drug To test the effectiveness of a new drug, a researcher gives one group of randomly selected individuals the new drug and another group of randomly selected individuals a placebo. The results of the study are shown here. At a=0.1, can the researcher conclude that the drug results differ from those of the placebo? Use the P-value method. Medication Not effective Effective Drug 33 Placebo 11 19

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Confidence Intervals

When we calculate intervals in probability and statistics, it can be simply termed as finding out a confidence interval. The confidence interval is usually calculated from the data set which is observed. The value of the parameter that needs to be calculated is present here only.