Use the following results from a test for marijuana use, which is provided by a certain drug testing company. Among
149 subjects with positive test results, there are 21 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. (Hint: Construct a table.)
The probability that a randomly selected subject tested negative or did not use marijuana is?
Among 9177 cases of heart pacemaker malfunctions,523 were found to be caused by firmware, which is software programmed into the device. If the firmware is tested in 3 different pacemakers randomly selected from this batch of 9177 and the entire batch is accepted if there are no failures, what is the probability that the firmware in the entire batch will be accepted? Is this procedure likely to result in the entire batch being accepted?
The probability is?
This procedure is (likely,unlikely,certain)? to result in entire batch being accepted?
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