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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A: Given: n1 = 31 n2 = 33 X1 = 76.53 X2 = 84.45 S1 = 11.96 S2 = 19.23 Significance level α = 0.01…

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A: For Z test the value of the test statistic formula can be written as: Here, x̄ is the sample mean,…

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A: Type I error is the probability of rejecting the null hypothesis when it is actually true.

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A: our objective is to find the mean

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A: The mean is  and the standard deviation is .

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A:

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A:

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Q: find the critical value compute the test value Make a decision summarize the results 

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A: Given data: Significance level  = 0.05

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A: descriptive statistics is abridged and  organized characteristics of data set.

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A: The ANOVA - F test is used to compare the mean difference between three or more than three groups.

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A: Solution-: Let,  and  be proportion of female and male respectively. Given: We find test statistic

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A: Given data is32,26,32,31,32,41,23,22,27,31,29,35,36,30,27,30,28,26

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A: Given  Level of significance ɑ=0.10, standard deviations σ=23, margin of error=e=2

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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.