Module I: Offline activity

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Dear students,

Please find below the offline activity for Module I. You have to finish it before the end of semester in order to get credits.

Best regards,
David

Given Name *

Family Name *

The company Fränzi and Friends developed a new quick test at home for SARS-Cov-2 which is pending regulatory agency’s review. The test has been shown to have a sensitivity of 99% and a specificity of 99%. Suppose that Fred uses the test by Fränzi and Friends and the test was positive. Assume that 1% of the population is in fact infected. Was is your guess about the probability that Fred is indeed infected? *

Please share a piece of code that visualizes the probability that Fred is indeed infected as the dependent variable, with the prevalence (1% in the example above, which takes any real-number value between 0.001% to 50%) and the specificity (99% in the example above, which takes values 99%, 99.9%, and 99.999%) as independent variables. For simplicity, we fix the sensitivity at 99%. Please put your code in GitHub or GitLab or other code-hosting service and paste the link below. *

What are your interpretations of the results?

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