3. A new medical test provides a false positive result for Hepatitis 2% of the time. That is, a perfectly healthy subject being tested for Hepatitis will test as being infected 2% of the time. In research, the test is given to 30 healthy (not having Hepatitis) subjects. Let X be the number of subjects who test positive for the disease. Assume that this is a binomial setting. (a) What are the mean and standard deviation of X? (b) Would it be unusual to have 3 out of the 30 people have false positives? Why or why not? *