. 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...

. 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 the0.1 significance level.


Table of number of people in each sub-category.

a) Identify the correct alternative hypothesis for this test.

Round numeric answers to 3 decimal places.


b) The χ2χ2test statistic value is:


c) The P-value is:


d) Based on this, we

e) Which means