The table below represents the number of Sales Inquiry received daily at 3 branches of a large cosmetic firm over a 3-day period: Queenstown Tiong Bahru Woodlands 115 120 127 102 125 159 151 110 155 There is a need to determine whether the DISTRICT Mean results are the same by performing a 1-way Anova. a) Formulate the Null and Alternative hypothesis. (2 marks) b) What is the decision criteria? (4 marks) c) Within 5% significance level, are the 3 sets of Mean results different?