Lie Detector: Suppose a lie detector allows 30% of all lies to go undetected. (a) If...
Lie Detector: Suppose a lie detector allows 30% of all lies to go undetected.
(a) If you take the test and tell 10 lies, what is the
probability of having 7 or more go undetected? Round your
answer to 3 decimal places.
(b) Would 7 undetected lies be an unusually high number* of
undetected lies? Use the criteria that a number (x) is
unusually large if P(x or more)
≤ 0.05.
Yes, that is an unusually high number of undetected lies. No, that is not an unusually high number of undetected lies.
...............................................
*Unusually low and high number of successes:
x successes among n trials is an
unusually high number of successes if
P(x or more) ≤ 0.05.
x successes among n trials is an
unusually low number of successes if
P(x or fewer) ≤ 0.05.
Homework Answers
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Lie Detector: Suppose a lie detector allows 30%
of all lies to go undetected.
(a) If...
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