Question 1 [6 marks} a} In the 213112] the average amount spent per week on fast food was $24.5U. It is widely suspected that people todayr are more health conscious. The manager of a fast food outlet records the amount spend for 9 weeks. 16 14 1Q 26 24 24 1E 1D 19 Assuming that the amounts are normally distributed with a known population standard deviation of $65G, can we conclude that the mean amount spent per week on fast food has decreased? Use o 2 am