The table shows how the average age of first marriage of Japanese women has varied since
Chapter 3, Problem 28(choose chapter or problem)
The table shows how the average age of first marriage of Japanese women has varied since 1950. t Astd t Astd 1950 23.0 1985 25.5 1955 23.8 1990 25.9 1960 24.4 1995 26.3 1965 24.5 2000 27.0 1970 24.2 2005 28.0 1975 24.7 2010 28.8 1980 25.2 (a) Use a graphing calculator or computer to model these data with a fourth-degree polynomial. (b) Use part (a) to find a model for A9std. (c) Estimate the rate of change of marriage age for women in 1990. (d) Graph the data points and the models for A and A9.
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