The 2021 monthly data below shows the number of TV ads run and the revenue of the XYZ company.

                        

Month	TV Ads	Revenue (₱M)
January	21	8.35
February	180	22.76
March	50	13.45
April	195	21. 10
May	96	15.00
June	44	12.50
July	171	20.70
August	135	19.72
September	120	16.12
October	75	13.10
November	106	15.67
December	198	25.30

 

1. Write the regression equation.
2. Interpret the slope and the y-intercept.
3. Determine and interpret the coefficient of determination.
4. Determine and interpret the coefficient of correlation.
5. Test the significance of the null hypothesis at a 0.05 level of significance.
6. Forecast revenue at 100 TV ads run.