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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Change the decimal number 0.02 to an equivalent percent and reduced fraction.
A. 20%; 
B. 0.0002%; 
C. 2%; 
D. 0.2%; 
Write the equation in vertex form. Identify the vertex.y = x2 + 3x + 1
A. y = 
2 - 
; 
B. y = 
2 - 
; 
C. y = (x + 3)3 - 9; (3, -9)
D. y = (x + 3)3 - 9; (-3, -9)
Which of the following IS NOT a reason firms outsource the performance of an activity to an external supplier?
A. This may create more value for customers. B. They can concentrate their own resources on their own core competencies. C. They will have the flexibility to more rapidly alter how activities are being used to implement its strategies. D. They will necessarily develop relationships with more firms thereby increasing their human capital.
Find the indicated probability.The distribution of B.A. degrees conferred by a local college is listed below, by major. Major FrequencyEnglish2073Mathematics2164Chemistry318Physics856Liberal Arts1358Business1676Engineering8689313What is the probability that a randomly selected degree is in Engineering?
A. 0.0012 B. 0.1028 C. 868 D. 0.0932