Considera model 3; = g + ,613: + cu. and a sample of observations for it and x as in the table below: Observation number The {approximated} 0L5 estimate of ,6; is [Remarkz remember to use the unbiased estimator of the covariance and of the 1uln'zariantzei _ C) 13.3 C) 434.2 C} -1.9 O 66.3