3 marks 5 marks Question 2 The amount a mother spends on prenatal care can have a long term impact in terms of reducing complications resulting from a baby's low birth weight. A random sample of 50 new mothers was asked to estimate how much the}.r spent on prenatal care. The results are presented in the frequency distribution below. Amount Spent Mothers on {Number} Prenatal Care (3;) 099 2 100199 4 200299 8 300399 20 400499 15 Total 50 a. Calculate the mean amount spent on prenatal care. I). Use the short-cut formula to calculate the standard deviation of amounts spent on prenatal care