An article in Air and Waste [“Update on Ozone Trends in California's South Coast Air Basin" (Vol. 43, 1993) studied the ozone levels on the South Coast air basin of California for the years 1976–1991. The author believes that the number of days that the ozone level exceeds 0.20 parts per million depends on the seasonal meteorological index (the seasonal average 850 millibar temperature) The data follow:

MATLAB: An Introduction with Applications
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Chapter1: Starting With Matlab
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8. Answer the problems completely. Round off your answers up to four decimal places, with correct units and box or encircle them. 

An article in Air and Waste ["Update on Ozone Trends in California's South Coast Air Basin" (Vol. 43, 1993)]
studied the ozone levels on the South Coast air basin of California for the years 1976–1991. The author believes
that the number of days that the ozone level exceeds 0.20 parts per million depends on the seasonal
meteorological index (the seasonal average 850 millibar temperature). The data follow:
Year
Days
Index
Year
Days
Index
1976
91
16.7
1984
81
18.0
1977
105
17.1
1985
65
17.2
1978
106
18.2
1986
61
16.9
1979
108
18.1
1987
48
17.1
1980
88
17.2
1988
61
18.2
1981
91
18.2
1989
43
17.3
1982
58
16.0
1990
33
17.5
1983
82
17.2
1991
36
16.6
8. Test for the adequacy of the regression model using the three methods.
Transcribed Image Text:An article in Air and Waste ["Update on Ozone Trends in California's South Coast Air Basin" (Vol. 43, 1993)] studied the ozone levels on the South Coast air basin of California for the years 1976–1991. The author believes that the number of days that the ozone level exceeds 0.20 parts per million depends on the seasonal meteorological index (the seasonal average 850 millibar temperature). The data follow: Year Days Index Year Days Index 1976 91 16.7 1984 81 18.0 1977 105 17.1 1985 65 17.2 1978 106 18.2 1986 61 16.9 1979 108 18.1 1987 48 17.1 1980 88 17.2 1988 61 18.2 1981 91 18.2 1989 43 17.3 1982 58 16.0 1990 33 17.5 1983 82 17.2 1991 36 16.6 8. Test for the adequacy of the regression model using the three methods.
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