(b) In the United States in 2004, there were approximately 41,492.000 people aged 15 to 24 and approximately 17,830,000 people aged 75 and up. Of the younger group, approximately people died of heart disease; of the older group, approximately 1,141,500 people died of heart disease. Based only on these figurescalculate the respective probabilities in 2004 that a person in each age group in the United States would have died of heart disease ; calculate each probability as a percent rounded to the nearest whole number. Provide a likely explanation for the difference in probability between age groups .