A test for marijuana usage was tried on 203 subjects who did not use marijuana. The test was wrong 72 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 to be wrong for those not using marijuana? Consider an event to be unusual if it's probably is less than or equal to 0.05.
A. The probability that the test will be wrong is approximately
B. Is it unusual for the test to be wrong for those not using marijuana?
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