Solution Found!
Lie detectors Refer to Exercise 82. Let Y = the number of people who the lie detector
Chapter 6, Problem 84(choose chapter or problem)
Lie detectors Refer to Exercise 82. Let Y = the number of people who the lie detector says are telling the truth. (a) Find P(Y 10). How is this related to P(X 2)? Explain. (b) Calculate mY and sY. How do they compare with mX and sX? Explain why this makes sense.
Questions & Answers
QUESTION:
Lie detectors Refer to Exercise 82. Let Y = the number of people who the lie detector says are telling the truth. (a) Find P(Y 10). How is this related to P(X 2)? Explain. (b) Calculate mY and sY. How do they compare with mX and sX? Explain why this makes sense.
ANSWER:Step 1 of 4
From Exercise 82,
The probability of lie detector suggesting a person is deceptive when a test is given to a truthful persons = 0.2
No. of job applicants,
Event: X = the number of people who the lie detector says are being deceptive
Given,
Event: Y = the number of people who the lie detector says are telling the truth
Let’s determine the mean and standard deviation of Y: