Use Bayes' rule to find the indicated probability.The incidence of a certain disease on the island of Tukow is 4%. A new test has been developed to diagnose the disease. Using this test, 91% of those who have the disease test positive while 4% of those who do not have the disease test positive (false positive). If a person tests positive, what is the probability that he or she actually has the disease?
A. 0.438
B. 0.487
C. 0.91
D. 0.856
Answer: B
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Solve the problem.The polynomial P(x) = 0.85x - 68 models the relationship between the number of pretzels x that a certain vendor sells and the profit the vendor makes. Find P(900), the profit the vendor makes from selling 900 pretzels.
A. $697 B. $832 C. $765 D. -$59.50
The bar graph below shows the number of students by major in the College of Arts and Sciences. Answer the question.
About how many students are in the College of Arts and Sciences?
A. 1225 B. 1050 C. 1325 D. 1100
Find the present value to the nearest cent.Joshua obtained a loan of $7900 for 360 days at 12%. If the value of money is 9%, find the present value in 176 days.
A. $8458.89 B. $8139.52 C. $8215.10 D. $8134.96
Find the function value.For f(x) = -|x - 2|, find f(-4).
A. -4 B. -6 C. 2 D. 6