The trend equation 2050 12x has been
The trend equation ŷ = 2050 + 12x has been developed for the number of vehicles using the ferry service at a national seashore each year. (The years have been coded so that 1997 corresponds to x = 1.) If the seasonal indexes for quarters I through IV are 55.0, 130.0, 145.0, and 70.0, respectively, estimate the usage volume for each quarter of 2014.
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