. 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 21 4 No stroke 99 126 a) Identify the correct alternative hypothesis for this test. 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. There is a relationship between having a stroke and which drug is taken. Round numeric answers to 3 decimal places.b) The χ2χ2test statistic value is: c) The P-value is: d) Based on this, we Reject H0H0 Do not reject H0H0 e) Which means The data is not strong enough to support that there is a significant relationship between the two variables. The two variables are mutually exclusive. There is definitely no relationship between the two variables. There is a significant relationship between the two variables.

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Description: . 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 p

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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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	21	4
No stroke	99	126

a) Identify the correct alternative hypothesis for this test.

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.
There is a relationship between having a stroke and which drug is taken.

Round numeric answers to 3 decimal places.

b) The χ2χ2test statistic value is:

c) The P-value is:

d) Based on this, we

Reject H0H0
Do not reject H0H0

e) Which means

The data is not strong enough to support that there is a significant relationship between the two variables.
The two variables are mutually exclusive.
There is definitely no relationship between the two variables.
There is a significant relationship between the two variables.

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