which of the following statements describes the confidence interval of the coefficient of the polynomial regression? what is the coefficient in a polynomial regression? how to estimate confidence intervals in a polynomial regression model how to estimate confidence interval in polynomial regression how do you estimate confidence intervals of coefficients what is the confidence intervals in the coefficients in a regression how to compute confidence intervals in polynomial regression confidence interval in polynomial regression confidence interval of regression coefficient confidence intervals of coefficients how to estimate confidence intervals of coefficients in polynomial regression what is the probability of confidence intervals in a polynomial regression model? how to estimate confidence intervals how to find confidence intervals confidence intervals of coefficients how to estimate the confidence interval for coefficients what is the confidence interval for a polynomial regression? how to find the confidence intervals of coefficients in a polynomial regression where is the confidence interval for regression coefficients what is the cdot matrix used for