A city in Texas wants to know the relationship between house size and the number of residents living in the house. The city has sampled 15 houses. Table below presents the number of residents and the house size. Obtain a regression equation and predict the house size required for a family of 5 residents?

Number of Residents	House size (Sq. ft)
3	1992
3	1754
3	1766
5	2060
6	2293
6	2139
3	1836
4	1924
6	2321
4	2060
3	1769
4	1955
5	2309
4	1857
4	1972