Source: National Center for Health Statistics, U.S. Census Bureau. 15. Estimate the life expectancy for men born in 1900 16. Estimate the life expectancy for women born in 2050. 17. By approximately how many more years can women born in 1996 expect to live as compared to men born in 1950? 18. For what genders and for what birth years does life ex- pectancy exceed 40 years but is at most 60 years? 19. The line graph at the top of the next column shows the population of the United States from 1970 to 2000 for people under 16. For the period from 1970 to 2000, in what