Oppa-Mart convenience shop has 30 outlets throughout Melaka. Ten (10) outlets are located in Alor Gajah Administration District (AD), eight (8) outlets are located in Jasin AD, and 12 outlets are located in Melaka Tengah AD. Oppa-Mart Chief Operating Officer (COO) questioned whether the outlets profit margin (RM in thousand) per outlet differed by AD. The following table shows the profit margin for the 30 Oppa-Mart outlets in Melaka. Alor Gajah AD (RM’000) Jasin AD (RM’000) Melaka Tengah AD (RM’000) 3,700 3,300 2,900 2,900 2,100 4,300 4,100 2,600 5,200 4,900 2,100 3,300 4,900 3,600 3,600 5,300 2,700 3,300 2,200 4,500 3,700 3,700 2,400 2,400 4,800 4,400 3,000 3,300 4,400 3,200 Provide your finding to the COO by using your business statistics knowledge, whether there is a difference in the mean profit margins (RM’000) per outlet earned by AD at 5% significance level. (