give the excel equations for each of the following questions.

1. Correctly calculate the daily returns for Dollar Tree, the S&P 500, and XLY. 2. Estimate the alphas (intercept), regression coefficients, a.k.a betas (slope), the standard error of the regressions (steyx), and the R-Squares for both models. 3. Calculate the abnormal returns, test statistics, and cumulative abnormal returns for Dollar Tree stock for the event period for both models and indicate whether the abnormal returns are statistically significant.