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Hi Ryan! You helped me...

Hi Ryan! You helped me before and I would love to request your help again. I have been working on a math problem and want to make sure that I am doing it correctly. Here is the question: The expected lifespan of a male has constantly increased over the

last century, or has it? Use Wolfram/Alpha to research "life expectancy U.S. male." The life expectancy history graph, shown at the bottom of the page shows that for some years, the life expectancy of a male decreased. In this project, we will determine a

polynomial line of best fit that describes the life expectancy of a U.S. male from 1940 through 2000. 1. Use Wolfram/Alpha to fill in the following table of data. You may have to search each year separately. Try "life expectancy, U.S. male, 1980." I have done

this: Year Years after 1940 Life Expectancy 1940 0 61.14 1945 5 62.96 1950 10 65.9 1955 15 66.58 1960 20 66.63 1965 25 66.8 1970 30 67.02 1975 35 68.72 1980 40 69.99 1985 45 71.08 1990 50 71.86 1995 55 72.6 2000 60 74.15 2005 65 75.02 Use Wolfram/Alpha to

find each of the following lines of best fit. Type "fit" and enter the points from the table above and the results should include each of the following best fit lines. (I did this on Wolfram/Alpha and on my graphing calculator and got the following information:

2. linear: y= 0.192884x + 62.2991 3. quadratic: y= -0.0000832418x^2 + 0.198294x + 62.245 4. cubic: y= 0.000060059x^3 - 0.00593899x^2 + 0.344988X + 61.6009 5. quartic: y= -0.00000378178x^4 + 0.00055169x^3 - 0.0260229x^2 + 0.611874x + 61.0215 (I want to make

sure all of my equations are correct...especially the decimal places) Use each line of best fit (found in #2-#5 above) to determine the life expectancy of a U.S. male in... 7. 1930: x = -10 linear: 60.37 quadratic: 60.25 cubic: 57.50 quartic: 51.71 8. 2010:

x = 70 linear: 75.80 quadratic: 75.72 cubic: 77.25 quartic: 74.78 or 74.77 ??? 9. 2040: x = 100 linear: 81.59 quadratic: 81.24 cubic: 96.77 quartic: 35.49 10. Which is the best model to use for future approximations of U.S. male life expectancy? Give a short

explanation for your choice. Linear, because it has the smallest differences keeping it consistent with the other data. 11. Why do you think U.S. male life expectancy stalled in the 1940's and in the 1970's? The 1940's and 1970's both had major wars during

that time that reduced the male life expectancy because those males were killed in battle. Suggestion: Try to determine the equation of best fit for female US life epectancy. Compare US Life expectancy with world expectancy. Please let me know if my answers

are correct. I appreciate your time! ***** *****

last century, or has it? Use Wolfram/Alpha to research "life expectancy U.S. male." The life expectancy history graph, shown at the bottom of the page shows that for some years, the life expectancy of a male decreased. In this project, we will determine a

polynomial line of best fit that describes the life expectancy of a U.S. male from 1940 through 2000. 1. Use Wolfram/Alpha to fill in the following table of data. You may have to search each year separately. Try "life expectancy, U.S. male, 1980." I have done

this: Year Years after 1940 Life Expectancy 1940 0 61.14 1945 5 62.96 1950 10 65.9 1955 15 66.58 1960 20 66.63 1965 25 66.8 1970 30 67.02 1975 35 68.72 1980 40 69.99 1985 45 71.08 1990 50 71.86 1995 55 72.6 2000 60 74.15 2005 65 75.02 Use Wolfram/Alpha to

find each of the following lines of best fit. Type "fit" and enter the points from the table above and the results should include each of the following best fit lines. (I did this on Wolfram/Alpha and on my graphing calculator and got the following information:

2. linear: y= 0.192884x + 62.2991 3. quadratic: y= -0.0000832418x^2 + 0.198294x + 62.245 4. cubic: y= 0.000060059x^3 - 0.00593899x^2 + 0.344988X + 61.6009 5. quartic: y= -0.00000378178x^4 + 0.00055169x^3 - 0.0260229x^2 + 0.611874x + 61.0215 (I want to make

sure all of my equations are correct...especially the decimal places) Use each line of best fit (found in #2-#5 above) to determine the life expectancy of a U.S. male in... 7. 1930: x = -10 linear: 60.37 quadratic: 60.25 cubic: 57.50 quartic: 51.71 8. 2010:

x = 70 linear: 75.80 quadratic: 75.72 cubic: 77.25 quartic: 74.78 or 74.77 ??? 9. 2040: x = 100 linear: 81.59 quadratic: 81.24 cubic: 96.77 quartic: 35.49 10. Which is the best model to use for future approximations of U.S. male life expectancy? Give a short

explanation for your choice. Linear, because it has the smallest differences keeping it consistent with the other data. 11. Why do you think U.S. male life expectancy stalled in the 1940's and in the 1970's? The 1940's and 1970's both had major wars during

that time that reduced the male life expectancy because those males were killed in battle. Suggestion: Try to determine the equation of best fit for female US life epectancy. Compare US Life expectancy with world expectancy. Please let me know if my answers

are correct. I appreciate your time! ***** *****

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