1Which of the following statements are true? The t-distrihution for the estimated parameters of simple linear regression has n-2 degrees of freedom if we know the exact variance of the errors for the population we are Interested in under the CNLRM framework. we can use a 2 distribution for condence intervals and hvpothesls testing The probability of constructing an interval containing the true regression parameter of interest is 1 alpha All of the other statements are true