Find the required linear model using least-squares regression.
The following table shows the number of operating federal credit unions in a certain country for several years.
Year
2011
2012
2013
2014
2015
Number of federal credit unions
4460
4286
4119
3942
3777
(a) Find a linear model for these data with xequals=11 corresponding to the year 2011.
(b) Assuming the trend continues, estimate the number of federal credit unions in the year 2017
