Mse为啥是7。7867？

NO.PZ202212300100013704 问题如下 Anh Liu is analystresearching whether a company’s burn affects investors’ cision toshort the company’s stock. She calculates the short interest ratio (the ratioof short interest to average ily share volume, expressein ys) for 50companies of the enof 2016 ancompares this ratio with the companies’ratio (the ratio of totliabilities to totassets, expresseincimform). Liu provis a number of statistiin Exhibit 1. Shealso estimates a simple regression to investigate the effeof the ratioon a company’s short interest ratio. The results of thissimple regression, inclung the analysis of varian(ANOVA), are shown inExhibit 2.Liu is consiring three interpretations of these results for her report on the relationship between ratios anshort interest ratios: Interpretation 1 Companies’ higher ratios cause lower short interest ratios.Interpretation 2 Companies’ higher short interest ratios cause higher ratios.Interpretation 3 Companies with higher ratios tento have lower short interest ratios. Baseon Liu’s regression results in Exhibit 2, theF-statistic for testing whether the slope coefficient is equto zero isclosest to: A.-2.2219 B.3.5036 C.4.9367 这题可以解答下吗？没看懂，以及知识点在哪