The table below displays results from experiments with polygraph instruments. Find the positive predictive value for the test. That is, find the probability that the subject lied, given that the test yieldsa positive result.Did the Subject Actually Lie?DNo (Did Not Lie) Yes (Lied)Positive test results2040Negative test results3311The probability is(Round to three decimal places as needed.)

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Answered: The table below displays results from…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Classic Probability Kevin was a product tester at Texas Instruments. He was dropping calculators from a height of 5 feet on to a concrete surface. He found that out of 30 trials 6 of them were broken. Based on these initial trials what is the probability that the next calculator he drops will not break? OA. O A. : Theoretical Probability O B. Empirical Probability O C. Subjective Probability D. ; Dependent Probability
The accompanying table shows the results from a test for a certain disease. Find the probability of selecting a subject with a negative test result, given that the subject has the disease. What would be an unfavorable consequence of this error? Yes No Positive 338 5 Negative 17 1150 The probability is ________(Round to three decimal places as needed) What would be an unfavorable consequence of this error? a) The subject would experience needless stress and addditional testing b) The rest would be shown to be not effective c) The subject would not receive treatment and could spread the disease d) The rest would be shown to be not reliable
From the U.S. Census Bureau and the article “U.S. Prison Population Falls for Third Year” by B. Montopoli of CBS News, we found that about 1 in every 200 Americans are in prison. Suppose 500 Americans are randomly sampled. Let X represents the number of Americans currently in prison. n = λ = (Round to two decimal places) Calculate the probability that three of the 500 Americans are currently in prison. Round your answer to four decimal places, e.g., 0.XXXX or .XXXX. P(X = 3) = Calculate the probability that at least three of the 500 Americans are currently in prison. Round your answer to four decimal places, e.g., 0.XXXX or .XXXX. P (X ≥ 3) = 1 – P (X < 3) = Calculate E(X) = µ. Round your answer to two decimal places, e.g., 0.XX or .XX. µ = E(X) = Calculate the standard deviation of X. Round your answer to two decimal places, e.g., 0.XX or .XX. σ =
interested in versus left- handedness and the IQ scores 3. A psychologist right-handedness collected the following data from a random of 2000 high school students. What is the probability that a student has a high IQ given that she is left-handed? High IQ Normal IQ Right-handed 190 1710 Left-handed 10 90
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The following table shows the results of a medical test. Positive Test Result Negative Test Result 95.3 4.6 Total 82.6 % 4.6 Has Disease X % 491 24 % 515 Does Not Have Disease 45 Use the preceding data to estimate each of the following. (Express each response as a percentage rounded to one decimal place.) a. If a person has the disease, what is the probability that person tests positive? This is the sensitivity or true positive rate of a test. 214 259 Total b. If a person has the disease, what is the probability that person tests negative? This is sometimes called the false negative rate. 536 238 774 c. If a person does not have the disease, what is the probability that person tests negative? This is the specificity or true negative rate of a test. d. If a person does not have the disease, what is the probability that person tests positive? This is sometimes called the false positive rate. X %
Samuel F.B. Morse (1791 – 1872), the creator of Morse Code, claimed that 12% of all letters used in the English language were “e”s. Suppose random samples of 196 letters are selected from a book What is the probability that a random sample of 196 letters will contain at least 10% "e"s? Type your calculated z-score here. Express its value to the nearest hundredth (two decimal places). Type your probability here. Express its value to four decimal places. Do not round.

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