Researchers are investigating whether high-risk patients have strokes or not depending on which of two drugs they take. Sample subjects are randomly assigned to take Drug A or to take Drug B. The number of subjects who had a stroke in a five year period is counted. Researchers want to check whether the two categorical variables (having a stroke or not; which of drug A or B is taken) are related. Test at the 0.1 significance level.Table of number of people in each sub-category.DataDrug ADrug BHad stroke1324No stroke107106a) Identify the correct alternative hypothesis for this test.There is a relationship between having a stroke and which drug is taken.Having a stroke and which drug is taken are independent.There is no relationship between having a stroke and which drug is taken.Having a stroke varies much more than the proportions for which drug is taken.Round numeric answers to 3 decimal places.b) The χ2test statistic value is: c) The P-value is:

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Answered: Researchers are investigating whether…

College Algebra (MindTap Course List)

12th Edition

ISBN:9781305652231

Author:R. David Gustafson, Jeff Hughes

Publisher:R. David Gustafson, Jeff Hughes

Chapter8: Sequences, Series, And Probability

Section8.7: Probability

Problem 6E: List the sample space of each experiment. Tossing three coins

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Researchers are investigating whether high-risk patients have strokes or not depending on which of two drugs they take. Sample subjects are randomly assigned to take Drug A or to take Drug B. The number of subjects who had a stroke in a five year period is counted. Researchers want to check whether the two categorical variables (having a stroke or not; which of drug A or B is taken) are related. Test at the 0.1 significance level.

Table of number of people in each sub-category.

Data	Drug A	Drug B
Had stroke	13	24
No stroke	107	106

a) Identify the correct alternative hypothesis for this test.

There is a relationship between having a stroke and which drug is taken.
Having a stroke and which drug is taken are independent.
There is no relationship between having a stroke and which drug is taken.
Having a stroke varies much more than the proportions for which drug is taken.

Round numeric answers to 3 decimal places.

b) The χ2test statistic value is:

c) The P-value is:

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