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Mayra Gonzalez

Mayra G.

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Paul A. verified

Numerade educator

Results from Experiments with Polygraph Instruments. 15, 32, 42, 9. If four of the test subjects are randomly selected without replacement, find the probability that they all had incorrect test results (either false positive or false negative).

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Christopher Stanley verified

Numerade educator

Determine whether the two events are disjoint for a single trial. Hint: (Consider disjoint to be equivenlant to separate or not overlapping.) Randomly selecting a fruit fly with red eyes. Randomly selecting a fruit fly with sepian (dark brown) eyes.

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Aparna Shakti verified

Numerade educator

Wisconsin Badger Five Select the five winning numbers from 1 through 31

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Michael Dunne verified

Numerade educator

When blood donors were randomly selected. 45% of them had blood that is Group O (based on data from the Greater New York Blood Program). Find the probability that at least 1 of the 5 donors has Group O blood.

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Pawan Yadav verified

Numerade educator

Find the probability that at least 1 of the 5 donors has Group O blood.

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Paul A. verified

Numerade educator

Treating 152 couples with the YSORT gender selection method developed by the Genetics & IVF Institute and recording the ages of the parents.

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Christopher Stanley verified

Numerade educator

Results from Experiments with Polygraph Instruments Did the Subject Actually Lie? No (Did Not Lie) Yes (Lied) Positive test result (Polygraph test indicated that the subject lied.) 15 (false positive) 42 (true positive) Negative test result (Polygraph test indicated that the subject did not lie.) 32 (true negative) 9 (false negative) If one of the test subjects is randomly selected, find the probability that the subject had a positive test result or did not lie.

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Protim Das verified

Numerade educator

Consider an event to be “unusual” if its probability is less than or equal to 0.05. (This is equivalent to the same criterion commonly used in inferential statistics, but the value of 0.05 is not absolutely rigid, and other values such as 0.01 are sometimes used instead.) USA Today reported on a survey of office workers who were asked how much time they spend on personal phone calls per day. Among the responses, 1065 reported times between 1 and 10 minutes, 240 reported times between 11 and 30 minutes, 14 reported times between 31 and 60 minutes, and 66 said that they do not make personal calls. If a worker is randomly selected, what is the probability the worker does not make personal calls.

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Robin Corrigan verified

Numerade educator

Membership in Mensa requires an IQ score above 131.5. Nine candidates take IQ tests, and their summary results mean IQ score is 133. (IQ scores are normally distributed with a mean of 100 and a standard deviation of 15). If 9 people are randomly selected, find the probability that their mean IQ score is at least 133. Can it be concluded that all 9 candidates have IQ scores above 131.5 so that they are all eligible for Mensa membership.

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IQ Scores. Find the area of the shaded region. The gr aphs depict IQ scores of adults, and those scores are normally distributed with a mean of 100 and a standard deviation of 15 (as on the Wechsler test). Use Table \( A-2 \) is \( 0.7257 \) and \( z=\underline{x}-\mu \) to find the answer. Round your answers to two decimal places (hundredths). What is the z-score and IQ score Z- score: IQ score:

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