According to a July 31, 2013, posting on cnn.com, a 2010 study in the journal Pediatrics found that 8% of children younger than age 18 in the United States have at least one food allergy. Among those with food allergies, about 39% had a history of severe reaction.
a. If a child younger than 18 is randomly selected, what is the probability that he or she has at least one food allergy and has a history of severe reaction?
b. It was also reported that 30% of those with an allergy in fact are allergic to multiple foods. If a child younger than 18 is randomly selected, what is the probability that he or she is allergic to multiple foods?