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Suppose an employee is suspected of having used an illegal drug and is given two tests that operate independently of each other. Test A has probability 0.86 of being positive if the illegal drug has been used. Test B has probability 0.87 of being positive if the illegal drug has been used.
The company requires that an employee, Al Capone, take and pass both tests to keep his job. Assume that Al has, in fact, been using the illegal drug. What is the probability that neither test is positive (and thus Al gets to keep his job)?
Express your answer in decimal form to 3 decimal places.
Ppopulation with a mean of 240 and standard deviation of 18. Find the mean & standard deviation of sample distribution of the mean?
Appalachian Coal mining believes it can enhance labor productivity and therefore net revenue by reducing air pollution in its mines. It estimates that the marginal cost function for reducing pollution by installing additional capital equipment is.
a train is made up of 50 railroad cars. each car made need service with probability 0.05. let x be the total number of
Also, for n = 25 and n = 100, find the probability that the maximal distance of the particle to its starting point during the n steps will exceed 1.65.
Patients in a critical care unit, who are matched on age, receive either experimental oral care or control oral care.
Paul received a score of 80 on a history test for which the class mean was 70 with a standard deviation of 10. He received a score of 75 on a biology test for which the class mean was 70
A.) The Law of Large Numbers is a statistical theory that you read about in this chapter. In your own words, what does this law say about the probability of an event? Perhaps you have also heard of something called the Law of Averages (also called..
A coin was flipped 100 times and came up heads 59 times and tails 41 times. The expected outcome was to land on heads or tails 50 times each.
Suppose raisin muffins from the recycling bakery have an average of 3 fresh raisins and 2 rotten raisins per muffin.
the random variable x has mean 9 and standard deviation 8. what is the mean and the variance of 2xrespectively?explain
grandma gertrudes chocolates a family owned business has an opportunity to supply its products for distribution through
the meat department of a supermarket sells ground beef in approximate 1 lb packages but there is some variability. a
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