Suppose a diagnostic test for disease D gives results that are continuous and normally distributed. For people without disease D the distribution is normal with mean 80 and standard deviation 15; and for those with disease D it is normal with mean 120 and standard deviation 20. You decide that levels ? 100 will be classified as positive, and levels < 100 negative. Find the sensitivity and specificity of this test. Change the cut point from 100 to 90,
Suppose a diagnostic test for disease D gives results that are continuous and normally distributed. For people without disease D the distribution is normal with mean 80 and standard deviation 15; and for those with disease D it is normal with mean 120 and standard deviation 20. You decide that levels ? 100 will be classified as positive, and levels < 100 negative. Find the sensitivity and specificity of this test. Change the cut point from 100 to 90,
MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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So im not sure how to even start this question. How do we calculate the sensitity and specificity only given the sample
![Suppose a diagnostic test for disease D gives results that are continuous and normally
distributed. For people without disease D the distribution is normal with mean 80 and
standard deviation 15; and for those with disease D it is normal with mean 120 and standard
deviation 20. You decide that levels ? 100 will be classified as positive, and levels < 100
negative. Find the sensitivity and specificity of this test. Change the cut point from 100 to 90,
recalculate the sensitivity and specificity. Pick several more cutpoints and plot the ROC
curve.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fe12869ed-f859-49f4-baa2-59815702973b%2F754bb576-d562-4a0e-9a56-a990da523425%2Fw0azegh_processed.png&w=3840&q=75)
Transcribed Image Text:Suppose a diagnostic test for disease D gives results that are continuous and normally
distributed. For people without disease D the distribution is normal with mean 80 and
standard deviation 15; and for those with disease D it is normal with mean 120 and standard
deviation 20. You decide that levels ? 100 will be classified as positive, and levels < 100
negative. Find the sensitivity and specificity of this test. Change the cut point from 100 to 90,
recalculate the sensitivity and specificity. Pick several more cutpoints and plot the ROC
curve.
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