Mathematics, 24.11.2019 17:31 mikey200059
Consider two medical tests, a and b for a virus. test a is 90% effective at recognizing the virus when it is present, but has a 5% false positive rate. test b is 80% effective at recognizing the virus when it is present, but only has a 1% false positive rate. the two tests are independent (i. e., they use different means for identifying the virus). the virus is carried by 2% of all people. if you could use only one of the two tests to identify the virus, which would you choose? justify your answer mathematically. how much more certain can you be if you can use both tests?
Answers: 2
Mathematics, 21.06.2019 19:30
Fa bus driver leaves her first stop by 7: 00 a.m., her route will take less than 37 minutes. if she leaves after 7: 00 a.m., she estimates that the same route will take no less than 42 minutes. which inequality represents the time it takes to drive the route, r?
Answers: 3
Mathematics, 21.06.2019 20:30
Three numbers x, y, and z are in the ratio 2: 7: 8. if 12 is subtracted from y, then three numbers form a geometric sequence (in the order x, y–12, z). find x, y, and z. there are 2 sets.
Answers: 1
Mathematics, 21.06.2019 21:00
Two cars which are 40 miles apart start moving simultaneously in the same direction with constant speeds. if the speed of the car which is behind is 56 mph and the speed of the other car is 48 mph, how many hours will it take for the car which is behind to catch up the car ahead of it?
Answers: 2
Mathematics, 21.06.2019 21:10
Which exponential function has an initial value of 2? f(x) = 2(3x) f(x) = 3(2x)
Answers: 1
Consider two medical tests, a and b for a virus. test a is 90% effective at recognizing the virus wh...
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