TV ratings provided by Nielsen Media Research show the percentage of TV-owning households tuned in to a particular program. The following data show the rating for the top-rated TV show of each season, from 1987€“1988 to 2000€“2001 (The New York Times Almanac 2002):

a. Graph this time series. Does a linear trend appear?
b. Develop a linear trend equation for this time series.
c. Use the trend equation to estimate the rating for the 2001€“2002seasons.

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Season 1987-1988 1988-1989 1989-1990 1990-1991 1991-1992 1992-1993 1993-1994 Rating 27.8 25.5 23.4 21.6 21.7 21.6 21.9 Season 1994-1995 1995-1996 1996-1997 1997-1998 1998-1999 1999-2000 2000-2001 Rating 20.5 22.0 21.2 22.0 17.8 16.6 17.4