A test for marijuana usage was tried on 217 subjects who did not use marijuana. The test result was wrong 66 times. a. Based on the available results, find the probability of a wrong test result for a person who does not use marijuana. b. Is it "unlikely" for the test to be wrong for those not using marijuana? Consider an event to be unlikely if its probability is less than or equal to 0.05. Question content area bottom Part 1 a. The probability that the test will be wrong is approximately
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A test for marijuana usage was tried on 241 subjects who did not use marijuana. The test result was wrong 4 times. a. Based on the available results, find the probability of a wrong test result for a person who does not use marijuana. b. Is it "unlikely" for the test to be wrong for those not using marijuana? Consider an event to be unlikely if its probability is less than or equal to 0.05. a. The probability that the test will be wrong is approximately: (Type an integer or decimal rounded to three decimal places as needed.) b. Is it "unlikely" for the test to be wrong for those not using marijuana?
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Consider an event to be "unusual" if its probability is less than or equal to O.O5. (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.) Table $4-1$ shows that among 178 subjects who did not use marijuana, the test result for marijuana usage was wrong 24 times. a. Based on the available results, find the probability of a wrong test result for a person who does not use marijuana. b. Is it "unusual" for the test result to be wrong for those not using marijuana?
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Use the following results from a test for marijuana use, which is provided by a certain drug testing company. Among 146 subjects with positive test results, there are 20 false positive results, among 155 negative results, there are 5 false-negative results. If one of the test subjects is randomly selected, find the probability that the subject tested negative or did not use marijuana. The probability that a randomly selected subject tested negative or did not use marijuana is.... Do not round until the final answer. Then round to 3 decimal places as needed.
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