1. Suppose that in It 'ted that a rap gnosti test yielded a false negative value (sensitivity of the test) of 12% (that is, 88% of tests on people with th COVID-19 virus correctly detect it) and a false positive value (specificity of the test) of 2% (that is, 98% of the tests on people without COVID-19 correctly conclude that the person is COVID-19 free). Assum that 16% of the population has COVID-19. If a randomly chosen person is tested and their result show a positive test, what is the probability that they have COVID-19?

1. Suppose that in It 'ted that a rap gnosti test yielded a false negative value (sensitivity of the test) of 12% (that is, 88% of tests on people with th COVID-19 virus correctly detect it) and a false positive value (specificity of the test) of 2% (that is, 98% of the tests on people without COVID-19 correctly conclude that the person is COVID-19 free). Assum that 16% of the population has COVID-19. If a randomly chosen person is tested and their result show a positive test, what is the probability that they have COVID-19?

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Below are F2 results of two of Mendel's monohybrid crosses. State a null hypothesis to be tested using x2 analysis. 11. Full pods (dominant) 904 constructed pods (recessive) 276 12. violet flowers (dominant) 717 white flowers (recessive) 213
One of the tests for Covid-19 is a genetic test, the aim of which is to detect viral RNA. If this test is applied during Stage 1, it will not detect the virus since the virus is hidden away inside the patient’s cells. 2% of patients with respiratory symptoms whose test indicates the presence of the SARS-Cov2, do not in fact have the SARS-Cov2, due to errors in the way the test is conducted. If this test is applied during Stage 2, it should detect SARS-Cov2 but 3% of these tests fail to detect SARS-Cov2 also due to errors in the way the test is conducted. a) Write the 2% and 3% probabilities using conditional probability notation, e.g. P(X|Y)=0.02. b) Are the 2% and 3% an example of a false positive rate or a false negative rate or neither? c) Is it possible to estimate the false negative probability of the genetic test by applying the test to patients known to be in Stage 3 of Covid-19? d) Is it possible to estimate the false positive probability by applying the test to patients known…
A random group of apartments was selected from a city to analyze the number of bedrooms they have. there evidence to reject the hypothesis that the apartments are equally distributed between 1-bedroom, 2 bedroom and 3-bedroom apartments , at alpha = 0.05
3
A random sample of 300 employees was chosen to take COVID-19 test. Results indicated that 180 employees have positive results. Use a 0.05 significant level. Set up the appropriate hypotheses that attempt to test the claim most employees at the company have COVID-19 O a. HO:P3D0.5 and Hl:p>=0.5 HO: p=0.5 and Hl: p0.5 Od. HO: p-0.5 and HT: p<0.5 e. None of these alternatives is correct.
Suppose that the results of carrying out the hypothesis test lead to non-rejection of the null hypothesis. Classify that conclusion by error type or as a correct decision if in fact the mean age at diagnosis of all people with early-onset dementia is less than 55 years old. Suppose that the manufacturer of a new COVID-19 vaccine in South Africa wants to test the null hypothesis Ho: 0 = 0.90 against the alternative hypothesis H₁: 0 = 0.60. She defined her test statistic Y as a number of patients recovered from COVID-19 after an observed twenty trials. If she decided to accept H, and assume y > 14, i) What will be her Type I error and the power of the test. ii) Explain how the probability of Type II error can be reduced in this case and how it will affect Type I error. Give a practical example.
I asked this question earlier and whoever answered this did not explain this well enough . I would like to know where the binomcdf(10, .38, 4) comes from and where the .6823130208 comes from