Concept explainers
Disease Test. Suppose a test for a disease is 90% accurate for those who have the disease (true positives) and 90% accurate for these who do not have the disease (true negatives). Within a sample of 2000 patients, the incidence rate of the disease is the national average, which is 2%.
a. Verify that the entries in the following table agree with the information given and that the overall incidence rate is 2%.
Explain.
Disease | No Disease | Total | |
Test positive | 36 | 196 | 232 |
Test negative | 4 | 1764 | 1768 |
Total | 40 | 1960 | 2000 |
b. Of those with the disease, what percentage test positive?
c. Of those who test positive, what percentage have the disease? Compare this result to that from part (b) and explain why they are different.
d. Of those who test positives what percentage do not have the disease?
Want to see the full answer?
Check out a sample textbook solutionChapter 3 Solutions
Using And Understanding Mathematics: A Quantitative Reasoning Approach Plus Mylab Math With Integrated Review And Student Activity Manual Worksheets (7th Edition)
- Don't use any Al tool show ur answer in pe n and paper then take 20. Solve the given system of differential equations: x' = x+y, x(0) = 0 y' = 2x, y(0) = 1arrow_forward4. Verify the Cauchy-Goursat theorem for the function f(z) =225z around the closed curve C defined by a half circle || = 1 from the point (1,0) to (-1, 0) in the counterclockwise direction and then the straight line from (-1,0) to (1,0). Don't use any Al tool show ur answer in pe n and paper then takearrow_forward2. Evaluate the following integral using cauchy integral theorem: ||=3 sin (22)+cos (22) (2-1)(2-2) -dz Don't use any Al tool show ur answer in pe n and paper then takearrow_forward
- 18. Solve the given differential equation: y' + y = f(t), y(0) = 5, where f(t) = 0arrow_forward16. Solve the given differential equation: y" + 4y Given, = sin (t)u(t2), y(0) = 1, y'(0) = 0 1 = (x² + 1)(x²+4) 1/3 -1/3 + x²+1 x²+4 Don't use any Al tool show ur answer in pe n and paper then takearrow_forwardHow to solve and explain (7x^2 -10x +11)-(9x^2 -4x + 6)arrow_forward^^ QUESTION 1. Two photos in total, I wrote the questionOnly 100% sure experts solve it correct complete solutions need to get full marks it's my quiz okkkk.take your time but solve full accurate okkk Geometry maths expert solve itarrow_forwardOnly 100% sure experts solve it correct complete solutions need to get full marks it's my quiz okkkk.take your time but solve full accurate okkk Geometry expert solve itarrow_forwardAll 6 questions in the image. Thank youarrow_forwardarrow_back_iosSEE MORE QUESTIONSarrow_forward_ios
- Holt Mcdougal Larson Pre-algebra: Student Edition...AlgebraISBN:9780547587776Author:HOLT MCDOUGALPublisher:HOLT MCDOUGALGlencoe Algebra 1, Student Edition, 9780079039897...AlgebraISBN:9780079039897Author:CarterPublisher:McGraw HillBig Ideas Math A Bridge To Success Algebra 1: Stu...AlgebraISBN:9781680331141Author:HOUGHTON MIFFLIN HARCOURTPublisher:Houghton Mifflin Harcourt
- Algebra: Structure And Method, Book 1AlgebraISBN:9780395977224Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. ColePublisher:McDougal LittellFunctions and Change: A Modeling Approach to Coll...AlgebraISBN:9781337111348Author:Bruce Crauder, Benny Evans, Alan NoellPublisher:Cengage Learning