deer ticks can be carriers of either lyme disease or human granulocytic ehrlichiosis (hge). based on a recent study, suppose that 18% of all ticks in a certain location carry lyme disease, 7% carry hge, and 7% of the ticks that carry at least one of these diseases in fact carry both of them. if a randomly selected tick is found to have carried hge, what is the probability that the selected tick is also a carrier of lyme disease?