Based on a linear regression with the above time series annual data for Firm A, we obtain a^=2.7 and b^=.06184

Finance by Geoffrey

ales Advertising

3.7 8
2.8 7
3.5 12
3.1 10
3.8 18

Y= Sales per year in Millions of Dollars

X = Number of advertisement made per year

Based on a linear regression with the above time series annual data for Firm A, we obtain a^=2.7 and b^=.06184

Calculate the Adjusted R-Square. Show all steps clearly.