Dawlance is a reliable brand for electronic appliances such as refrigerators, micro-wave ovens, washing machines etc. But due to high competition in electronics, it has faced fluctuated sales pattern in its sales. Company has hired an analyst to investigate the core factor responsible for this fluctuation. After investigating the relationship among 4 determinants of company's 10 years sales data, analysts has estimated that coefficient of determination R2 is equal to 85%.

Calculate adjusted coefficient of determination and F statistic for the sales of Dawlance Company.