Maurice Tutor

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About Maurice Tutor

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Expertise:
Algebra,Applied Sciences See all
Algebra,Applied Sciences,Biology,Calculus,Chemistry,Economics,English,Essay writing,Geography,Geology,Health & Medical,Physics,Science Hide all
Teaching Since: May 2017
Last Sign in: 398 Weeks Ago, 4 Days Ago
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Education

  • MCS,PHD
    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

Experience

  • Professor
    Phoniex University
    Oct-2001 - Nov-2016

Category > Management Posted 12 Oct 2017 My Price 6.00

New York Times

An article in the New York Times (February 17, 1999) about the PSA blood test for detecting prostate cancer stated that, of men who had this disease, the test fails to detect prostate cancer in 1 in 4 (so called false-negative results), and of men who did not have it, as many as two-thirds receive false-positive results. Let C (C¯) denote the event of having (not having) prostate cancer and let + (−) denote a positive (negative) test result.

a. Which is true: P(−|C) = 1/4 or P(C|−) = ¼ OR P(C¯|+) = 2/3 or P(+|C)¯ = 2/3?

 b. What is the sensitivity of this test?

c. Of men who take the PSA test, suppose P(C) = 0.01. Find the cell probabilities in the 2 × 2 table for the joint distribution that cross classifies Y = diagnosis (+, −) with X = true disease status (C,C¯).

 d. Using (c), find the marginal distribution for the diagnosis.

 e. Using (c) and (d), find P(C|+), and interpret.

Answers

Maurice Tutor
(5)
Status NEW Posted 12 Oct 2017 08:10 PM My Price 6.00

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