Mathematics, 03.03.2022 14:40, ykluunae2
An item is defective (independently of other items) with probability 0.3. You have a method of testing whether the item is defective, but it does not always give you correct answer. If the tested item is defective, the method detects the defect with probability 0.9 (and says it is good with probability 0.1). If the tested item is good, then the method says it is defective with probability 0.2 (and gives the right answer with probability 0.8).
Required:
Compute EX and VarX.
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Noel is hoping to make a profit (in $) on the school play and has determined the function describing the profit to be f(t) = 8t โ 2654, where t is the number of tickets sold. what does the number 8 tell you?
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