Complete the following questions and submit your answers via Blackboard by the d

Question

Complete the following questions and submit your answers via Blackboard by the due date. The total possible points earned is 41 points. Round all calculated values to 4 decimal points if necessary is the standard test used to diagnose the occurrence of stroke. However, the test is The angiogram invasive and researchers are looking into an alternative screening test that is non-invasive. One hundred patients with transient monocular blindness, or eye), were given both tests to determine if they have had a stroke. The results for stroke diagnosis were as follows: TMB (where a person temporarily loses vision in one Angiogram Positive Angiogram Negative Total 10 30 40 63 37 100 Non-Invasive Test Positive 53 tive Total 60 Define the screening test as the non-invasive test and the diagnostic test as the Angiogram. For both tests, a positive test indicates positive for a stroke per that test. 1. What is the predictive value positive of the non-invasive test? (3 pts) a. 0.575 b. 0.45 . 0.6389 d. 0.8413 2. What is the predictive value negative of the non-invasive test? (3 pts) a. 0.8108 b. 0.675 c. 0.6389 d. 0.5 3. What is the specificity of the non-invasive test? (3 pts) a. 0.5 b. 0.75 c 0.8108 d. 0.675 4. True or False: Based on your answers for questions 1 and 2, you would recommend using the non-invasive test. (2 pts) What is the prevalence of stroke in the given sample according to the angiogram result? (2 pts) 5. b. 0.6 d. 0.43

Explanation / Answer

SOlution11:

smallest sd means data points closest to mean

curve B has smallest sd

SOlution12:

mean of curve A=central line

cuts at 8

mean=8

Solution`3:

z=x-mean/sd

=8.75-9.5/1.25

Z=-0.6

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