a$)$ You are tasked with preparing a report forecasting customers for the next year $($i$.$e$.$ for Quarters $1,2,3$ and $4$ in $2024)$ for the manager of this sailboat manufacturin

g company. You are tasked with developing two forecasting models; namely:

b$)$ a multiplicative time series decomposition forecasting model; and

c$)$ a regression model using dummy variables$\mathrm{.}2$s