Periodically, merrill lynch customers are asked to evaluate merrill lynch financial consultants and services (2000 merrill lynch client satisfaction survey). higher ratings on the client satisfaction survey indicate better service with 7 the maximum service rating. independent samples of service ratings for two financial consultants are summarized here. consultant a has 10 years of experience, whereas consultant b has 1 year of experience. use = .05 and test to see whether the consultant with more experience has the higher population mean service rating.