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Finance The accompanying table gives the median household income (in thousands of dollars) for women living without a spouse (this means that 50% of females earn more than the median and 50% earn less than that amount) for various years:
Year | 1980 | 1990 | 1995 | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 |
Income | 10.4 | 16.9 | 19.7 | 21.0 | 22.1 | 23.8 | 25.7 | 25.7 | 26.4 | 26.6 | 27.0 | 27.2 |
(a) Find a linear model for these data, with x — 0 corresponding to 1980.
(b) Interpret the meaning of the slope.
(c) Comparing your answer for (b) with your answer for part (b) in Exercise 23, are men or women gaining more in median income each year?
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