Suppose you estimate a single linear regression and obtain a OLS regression coefficient estimate of 81-4.55 with a standard error of SE(B1)-2.31. What is the 90% confidence interval for the true value of B1? [2 24,6,86] [0.02.9.08) O 1-0.83, 9.931You estimate an ARDL(2,3,2) model for dependent variable Yit using a time series of T=300 observations with dependent variable Y and regressors X and Z which respectively have 3 and 2 lags in the model. Suppose you conduct a joint hypothesis test that all of the coefficients on the lagged Z regressors are equal to O. What is the distribution of the F-statistic for this joint test? OF(3.2961 OF(2 292) OF(2.289) Q F18,300)