I need help with those 4 questions please A certain county h

A certain county health department has received 25 applications for an opening that exist for a public health nurse. Of these applicants. 10 are over the age of 30 and 15 are under the age of 30. Seventeen of the applicants hold bachelor\'s degree and eight has masters degree. Of those under 30 years of age, six have masters degree. If a selection from anions these 25 applicants is made at random, what is the probability that a person over Ago of 30 or a person with a masters degree will he selected? Answer the following: The probability is 0.6 that a patient selected at random form the current residents of a certain hospital will be male. The probability that the patient will be a male who is in for surgery is 0.2. A patient landed selected from current residents is found to be a male: what is the probability that the patient is in the hospital for surgery? In a certain population of hospital patients the probability is 0.35 that a randomly selected patient will have heart disease. The probability is 0.86 that a patient with heart disease is a smoker. What is the pro that a patient randomly selected from the population will IK-a smoker and have heart disease? is a common congenital abnormality in which a coin with one or more extra lingers or toes. It is reported that in every 500. A young obstetrician celebrates her first 100 deliveries. What is Improbability that she has delivered at least 1 child with For the1 combined KL1SA-Western blot blood test for H1Y positive status, the sensitivity is about 0.999 and the specificity is about 0.9999. Consider a high risk group in which 10% are truly HIV positive. A person from the high risk group has a positive test result. Find the positive predictive value of the test.

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