Three years of monthly lawn-maintenance expenses ($) for a six-unit apartment house insouthern Florida follow.Month Year 1 Year 2 Year 3January XXXXXXXXXX195February XXXXXXXXXX210March...

Three years of monthly lawn-maintenance expenses ($) for a six-unit apartment house insouthern Florida follow.Month Year 1 Year 2 Year 3January 170 180 195February 180 205 210March 205 215 230April 230 245 280May 240 265 290June 315 330 390July 360 400 420August 290 335 330September 240 260 290October 240 270 295November 230 255 280December 195 220 250a. Construct a time series plot. What type of pattern exists in the data?b. Identify the monthly seasonal indexes for the three years of lawn-maintenance expensesfor the apartment house in southern Florida as given here. Use a 12-monthmoving average calculation.c. Deseasonalize the time series.d. Compute the linear trend equation for the deseasonalized data.e. Compute the deseasonalized trend forecasts and then adjust the trend forecasts usingthe seasonal indexes to provide a forecast for monthly expenses in year 4.