The following quadratic regression equation gives us an estimate of n, which is the number of days the AQI exceeded 100 a
particular year. We will use this equation to estimate the number of days the AQI was over 100 in the year 1995.
n-1.762 - 13.321+ 41.00
(Lett represent the number of years since 1990. Therefore, t = 0 corresponds to the year 1990. For the estimate of n, round to the
nearest whole day.)
18 days
b. 24 days
c. 182 days
d. 72 days