Adiagnostic test for a certain disease is said to be 90% accurate in that, if a person has the disease, the test will detect it with probability 0.9. also, if a person does not have the disease, the test will report that he or she doesn’t have it with probability 0.9. only 1% of the population has the disease in question. if a person is chosen at random from the population and the diagnostic test reports him to have the disease, what is the conditional probability that he does, in fact, have the disease? are you surprised by the size of the answer? would you call this diagnostic test reliable?

Find the value of x that will make l ll m

Quick! a survey of 57 customers was taken at a bookstore regarding the types of books purchased. the survey found that 33 customers purchased mysteries, 25 purchased science fiction, 18 purchased romance novels, 12 purchased mysteries and science fiction, 9 purchased mysteries and romance novels, 6 purchased science fiction and romance novels, and 2 purchased all three types of books. a) how many of the customers surveyed purchased only mysteries? b) how many purchased mysteries and science fiction, but not romance novels? c) how many purchased mysteries or science fiction? d) how many purchased mysteries or science fiction, but not romance novels? e) how many purchased exactly two types of books?

Which is the focus of a parabola with equation y2=4x