(c) [6 points] After showing your results from (a) to a colleague, she tells you that she instead used the same data to estimate the following regression: Tax Bill = a + B * Year+ & She finds an estimate of B = 604.9 with a standard error of SE (B ) = 269.9. Explain to your colleague (who has formal training in Statistics) two reasons why her estimate differs from your estimate above. Reason #1: Reason #2