Hi, Please solve Simple & Multiple Linear Regression

5. Consider the table in the table below. Sales Period (units) January-June 1992 4,075 July-December 1992 8,239 January-June 1993 3,284 July-December 1993 6,194 January-June 1994 2,582 July-December 1994 5,183 January-June 1995 1,968 July-December 1995 4,023 January-June 1996 1,798 July-December 1996 3,522 a. Fit a simple linear regression to this data. What is your forecast for the January-June 1997 period? b. Now divide the data into two sets: the first half of the year, and the second half of the year. Perform a simple regression on the data for sales in the first half-year. What is your forecast for the January-June 1997 period? Do you think this answer is more likely to be accurate than the answer to part (a)? Why