Math  /  Data & Statistics

Questionpoint(s) possible
A test for marijuana usage was tried on 173 subjects who did not use marijuana. The test result was wrong 74 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 \square . (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? Choose the correct answer below. No Yes

Studdy Solution
Compare the calculated probability with 0.05 0.05 to determine if it is "unlikely".
Since 0.428 0.428 is greater than 0.05 0.05 , it is not "unlikely".
The probability that the test will be wrong is approximately 0.428 0.428 .
Based on the probability comparison, it is not "unlikely" for the test to be wrong for those not using marijuana.

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