6. Refer to the table below. Given that 2 of the 151 subjects are randomly selected,...
6. Refer to the table below. Given that 2 of the 151 subjects are randomly selected, complete parts (a) and (b).
Rh + Rh -
O 43 14
A 38 12
B 16 6
AB 19 3
A. . Assume that the selections are made with replacement. What is the probability that the 2 selected subjects are both group Upper A and type Rh Superscript Rh+?
____(Round to four decimal places as needed.)
|
b. Now assume the selections are made without replacement. This means the probability of selecting the second subject who is group A and Rh+ is not the same as the probability of selecting the first subject? The accompanying table contains the results from experiments with a polygraph instrument. Find the probabilities of the events in parts (a) and (b) below. Are these events unlikely? a. Four of the test subjects are randomly selected with replacement, and they all had true negative test results. b. Four of the test subjects are randomly selected without replacement, and they all had true negative test results. _ No_(Did_Not_Lie) Yes_(Lied) Positive_test_result 11 26 Negative_test_result 61 12 a. The probability that all four test subjects had a true negative test result when they are randomly selected with replacement is____. (Round to three decimal places as needed.) |
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6. Refer to the table below. Given that 2 of the 151 subjects are randomly selected,...
5. For the given pair of events A and B, complete parts (a) and (b) below....
5. For the given pair of events A and B, complete parts (a) and (b) below. A: A marble is randomly selected from a bag containing 10 marbles consisting of 1 red, 6 blue, and 3 green marbles. The selected marble is one of the green marbles. B: A second marble is selected and it is the 1 red marble in the bag. B. b. The probability that events A and B both occur is____ (Round to four decimal places...
Refer to the table below. Given that 2 of the 224 subjects are randomly selected, a....
Refer to the table below. Given that 2 of the 224 subjects are randomly selected, a. Assume that the selections are made with replacement. What is the probability that the 2 selected subjects are both group B and type Rh? b. Assume the selections are made without replacement. What is the probability that the 2 selected subjects are both group B and type Rh? 9. Group AB 6657 2323 TypeRh 2018 89
Use the sample data in the table. Results from Experiments with Polygraph Instruments Did the Subject...
Use the sample data in the table. Results from Experiments with Polygraph Instruments Did the Subject Actually Lie? No Yes (Did Not (Lied) Lie) 15 42 (false (true positive) positive) Positive test result (Polygraph test indicated that the subject lied.) Negative test result (Polygraph test indicated that the subject did not 32 9 (true (false negative) negative) lie.) If 3 of the 98 test subjects are randomly selected without replacement, find the probability that they all had false positive results....
12. Refer to the sample data for polygraph tests shown below. If one of the test...
12. Refer to the sample data for polygraph tests shown below. If one of the test subjects is randomly selected, what is the probability that the subject is not lying? Is the result close to the probability of 0.406 for a negative test result? _ No_(Did_Not_Lie) Yes_(Lied) Positive_test_results 16 44 Negative_test_results 27 14 The probability that a randomly selected polygraph test subject was not lying is___ (Type an integer or decimal rounded to three decimal places as needed.) 13. In...
Use the data in the following table, which summarizes blood groups and Rh types for randomly selected subjects.
Use the data in the following table, which summarizes blood groups and Rh types for randomly selected subjects. Assume that subjects are randomly selected from those included in the table.If one person is selected, find the probability of getting someone who is Group A or type Rh+. Are the events of selecting someone who is Group A and the event of someone who is type Rh disjoint events? The probability of getting someone who is Group A or type Rh+ is...
1) The table below classifies 555 subjects by drug use and drug test result. Subject Uses...
1) The table below classifies 555 subjects by drug use and drug test result. Subject Uses Drugs Positive Test Result (Test shows drug use.) 45 (True Positive) 25 (False Positive) Negative Test Result (Test shows no drug use.) 5 (False Negative 480 (True Negative) Subject Does Not Use Drugs a) If a subject is selected at random, find the probability this person uses drugs given that the test result is negative. (a) Express this statement in probability notation. (b) Find...
1) The table below classifies 555 subjects by drug use and drug test result. Subject Uses...
1) The table below classifies 555 subjects by drug use and drug test result. Subject Uses Drugs Positive Test Result (Test shows drug use.) 45 (True Positive) 25 (False Positive) Negative Test Result (Test shows no drug use.) 5 (False Negative 480 (True Negative) Subject Does Not Use Drugs a) If a subject is selected at random, find the probability this person uses drugs given that the test result is negative. (a) Express this statement in probability notation. (b) Find...
18. Drug Screening If one of the test subjects is randomly seleci the subject had a...
18. Drug Screening If one of the test subjects is randomly seleci the subject had a positive test result or does not use drugs. 19. Drug Screening if one of the subjects is randomly selected, find the probability that the subject had a negative test result or does not use drugs. Whiarre is randomly selected, find the probability that the Negative Test (Drug Use Is Not Indicat Table 4-1 Pre-Employment Drug Screening Results Positive Test Result (Drug Use Is Indicated)...
Use the following results from a test for marijuana use. Among 154 subjects with positive test...
Use the following results from a test for marijuana use. Among 154 subjects with positive test results, there are 26 false positive results. Among 137 negative test results, there are 2 false negative results a. How many subjects are included in the study? b. How many of the subjects had a true negative result? c. What is the probability that a randomly selected test subject had a true negative result? a. There are 291 subjects included in the study. (Type...
The table below summarizes results from a study of people who refused to answer survey questions.
The table below summarizes results from a study of people who refused to answer survey questions. A market researcher is not interested in refusals or subjects below 22 years of age or over 59. Find the probability that the selected person refused to answer or is below 22 or is older than 59. The probability that a randomly selected person refused to answer the survey question or is below 22 or is older than 59 is _______ (Do not round until...
Refer to the table below. Given that 2 of the 224 subjects are randomly selected, a. Assume that the selections are made with replacement. What is the probability that the 2 selected subjects are both group B and type Rh? b. Assume the selections are made without replacement. What is the probability that the 2 selected subjects are both group B and type Rh? 9. Group AB 6657 2323 TypeRh 2018 89
Use the sample data in the table. Results from Experiments with Polygraph Instruments Did the Subject Actually Lie? No Yes (Did Not (Lied) Lie) 15 42 (false (true positive) positive) Positive test result (Polygraph test indicated that the subject lied.) Negative test result (Polygraph test indicated that the subject did not 32 9 (true (false negative) negative) lie.) If 3 of the 98 test subjects are randomly selected without replacement, find the probability that they all had false positive results....
1) The table below classifies 555 subjects by drug use and drug test result. Subject Uses Drugs Positive Test Result (Test shows drug use.) 45 (True Positive) 25 (False Positive) Negative Test Result (Test shows no drug use.) 5 (False Negative 480 (True Negative) Subject Does Not Use Drugs a) If a subject is selected at random, find the probability this person uses drugs given that the test result is negative. (a) Express this statement in probability notation. (b) Find...
1) The table below classifies 555 subjects by drug use and drug test result. Subject Uses Drugs Positive Test Result (Test shows drug use.) 45 (True Positive) 25 (False Positive) Negative Test Result (Test shows no drug use.) 5 (False Negative 480 (True Negative) Subject Does Not Use Drugs a) If a subject is selected at random, find the probability this person uses drugs given that the test result is negative. (a) Express this statement in probability notation. (b) Find...
18. Drug Screening If one of the test subjects is randomly seleci the subject had a positive test result or does not use drugs. 19. Drug Screening if one of the subjects is randomly selected, find the probability that the subject had a negative test result or does not use drugs. Whiarre is randomly selected, find the probability that the Negative Test (Drug Use Is Not Indicat Table 4-1 Pre-Employment Drug Screening Results Positive Test Result (Drug Use Is Indicated)...
Use the following results from a test for marijuana use. Among 154 subjects with positive test results, there are 26 false positive results. Among 137 negative test results, there are 2 false negative results a. How many subjects are included in the study? b. How many of the subjects had a true negative result? c. What is the probability that a randomly selected test subject had a true negative result? a. There are 291 subjects included in the study. (Type...
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