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Four hundred thousand (400,000) deaths from all causes were reported in 1995 from Zaire. In this country, 150,000 deaths occurred among young people, and 250,000 deaths occurred among old people during the same year. In Ethiopia, 400,000 deaths from all causes were reported in 1995, including 250,000 among young people, and 150,000 among old people. a) Tabulate the number of deaths by age and country. Total DEATHS Young Old COUNTRY Zaire Ethiopia Total b) Which of the following statements best summarizes these data? (1) The incidence of mortality was equal between the two countries. (2) Old people in Zaire had a higher incidence of mortality than old people in Ethiopia. Young people in Zaire had a higher incidence of mortality than young people in Ethiopia. (4) The populations of the two countries were equally distributed by age (young - old). (5) None of the above. c) How would an investigator determine which country had the lower crude incidence of mortality? d) How would an investigator determine which country had the lower incidence of mortality among young people