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SKQ-101 Online Sections Graded Homework 5
Directions: Draw a circle around your answer(s) for each question and show all of your work.
Graded Question #1: Unit E Exercise 20 Page 129
The results in the table below are from experiments conducted by researchers Charles R.
Honts (Boise State University) and Gordon H. Barland (Department of Defense Polygraph
Institute). In each case, it was known whether the subject lied, so the table indicates when
the polygraph test was correct.
Did the subject actually lie?
No
Yes
Total
Polygraph indicated the
subject lied
15
42
Polygraph indicated the
subject did not lie
32
9
Total
a) Finish completing the table above by calculating the total row and total column.
b) How many subjects did the test find to be lying?
c) What percentage of those who were found to be lying were not actually lying?
d) How many subjects did the test find to be telling the truth?
e) What percentage of those who were found to be telling the truth were actually being
truthful?Graded Question #2
A test for a certain disease is 90% accurate. At a local clinic, 3000 patients are tested for
this disease, and 3% of the patients truly have the disease.
a.
Fill in the following table showing these testing results. Show the calculation you
did in each cell.
Disease
No Disease
Total
Test Positive
Test Negative
Total
b.
Of those who have the disease, what percent tested positive?
c.
Of those who tested positive, what percent have the disease?
Requirements: step by step.