Companies​ A, B, and C produce ​10%, 20​%, and 70​%, ​respectively, of the major appliances sold in a certain area. In that​ area, ​4% of the company A​ appliances, 4.5% of the company B​ appliances, and ​4% of the company C appliances need service within the first year. Suppose a defective appliance is chosen at​ random; find the probability that it was manufactured by Company B.

Sickle cell anemia is an inherited disease in which red blood cells become distorted and deprived of oxygen. A person with two sickle cell genes will have the disease, but a person with only one sickle cell gene will have a mild, non-fatal anemia called sickle cell trait. Using S to represent the sickle cell gene, and s a healthy gene, the table shows the four possibilities for the children of two Ss parents. Find the probability that these parents give birth to a child who has sickle cell anemia. Second Parent First Parent Ss sS P(child has sickle cell anemia) =| (Type an integer or a simplified fraction.)