MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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how did you get your answer? what chart did you use? how did you know if the the graph was towards the right or left. explain please

Question 3
The test statistic is [a). Round your answer to 2 decimal places.
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Transcribed Image Text:Question 3 The test statistic is [a). Round your answer to 2 decimal places.
The herb ginkgo biloba is commonly used as a treatment to prevent dementia. In a study of the effectiveness of this treatment, 1545
elderly subjects were given ginkgo and 1524 were given a placebo. Among those in the ginkgo treatment group, 246 later developed
dementia, and among those in the placebo, 277 later developed dementia. You will be testing the claim that ginkgo biloba reduces the
probability of developing dementia using a 99% confidence level.
*Please let the ginkgo treatment group be sample 1 and the placebo treatment group be sample 2.*
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Transcribed Image Text:The herb ginkgo biloba is commonly used as a treatment to prevent dementia. In a study of the effectiveness of this treatment, 1545 elderly subjects were given ginkgo and 1524 were given a placebo. Among those in the ginkgo treatment group, 246 later developed dementia, and among those in the placebo, 277 later developed dementia. You will be testing the claim that ginkgo biloba reduces the probability of developing dementia using a 99% confidence level. *Please let the ginkgo treatment group be sample 1 and the placebo treatment group be sample 2.*
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