Probability

Question 1 of 5 Which of the following is an acceptable probability for event A? 2.4 - 60% 1.5 .53 3.6 Question 2 of 5 Which of the following represents the probability of an event that is impossible? 0.68 .000001 0 1 .999Question 5 of 5 It was estimated that in a certain population roughly 5% carry the HIV virus. Afew years later a researcher wanted to confirm this has not changed. If we let V be the event that a randomly chosen person from this population carries the HIV virus, which ofthe following will provide the most convincing evidence that PM is no longer 0.05? :| 20000 randomly chosen individuals from this population are tested and 1020 of them are found to carry the HIV virus. :| 2000 randomly chosen individuals from this population are tested and 500 of them are found to carry the HIV virus. :| 200 randomly chosen individuals from this population are tested and 10 of them are found to carry the HIV virus. :| 2000 randomly chosen individuals from this population are tested and 102 of them are found to carry the HIV virus. Question 3 of 5 Let A be the event that a document will reach its destination on time using a certain service. IfP (A) = .02 this means that: :| The document will almost always reach its destination on time. :| The document will always reach its destination on time. :| The document will never reach its destination on time. :| The document will almost never reach its destination on time. Question 4 of 5 120 randomly chosen individuals from a certain population are tested for the presence ofthe HIV virus, and 20 are found to be carriers of the virus. Based on this information, what is the estimate of PM, the probability that a randomly chosen person from this population carries the HIV virus? II 16.7% :| .20 :| .50 :| Not enough information to solve the problem :l .125