A test determine whether a certain antibody is present is 99.8% effective. This means that the test will accurately coma back negative if the antibody is not present (in the test subject)99.8% of the time. The probability of a test comes back positive when the antibody is not present (a false positive) is 0.002. Suppose the test. Is given to six randomly selected people who do not have the antibody.
(A) what is the probability that test comes back negative for all six people.?
(B) What is the probability that the test comes back positive for at least on of six people.?
Answers: 2
SAT, 25.06.2019 22:00
In the image, layer a is the topmost layer. layer c contains fossils from the precambrian era. layer b contains dinosaur fossils, and layer a contains fossils of mammals. which two statements are supported by this evidence? 1. mammals lived before the precambrian era. 2. dinosaurs and mammals existed in the precambrian era. 3. dinosaurs evolved after precambrian organisms. 4. precambrian organisms evolved after dinosaurs. 5. precambrian organisms were the first life-forms to become fossilized, according to this sample.
Answers: 1
SAT, 27.06.2019 10:30
Spider crabs live in the shallow regions of the ocean floor. algae tend to grow on the surface of spider crabs. the algae provide the crabs protection from predators by camouflaging them. the spider crabs give the algae shelter. what does this description suggest? 1. the algae are parasites of the spider crabs. 2. the algae and the spider crabs have a mutualistic relationship. 3. the spider crabs are commensals, and the algae are parasites. 4. the spider crabs benefit from the algae living on them. 5. the spider crabs are parasites of the algae.
Answers: 1
SAT, 27.06.2019 14:00
Jerrold has to buy 12 copies of a textbook which costs $36.25 per copy. how much must he spend for them?
Answers: 2
SAT, 28.06.2019 10:30
How many soccer players are there that are only getting paid as a career? ? plz give correct info
Answers: 1
A test determine whether a certain antibody is present is 99.8% effective. This means that the test...
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