Pls help

Probability theory and statistics

Pls help

Postby Annasilva » Tue Mar 24, 2020 11:42 am

When you leave a party hall, you can be subjected to an alcohol test as soon as you can check whether you are allowed to drive or not. However, the test is not 100% reliable: it only reacts positively on 94% of people who drink too much, and it also responds on 8% of people who do not drink too much. If you know that 40% of those present people drank too much during this evening, calculate the probability that he or she reacts negatively, if he or she drunk too much.
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