Periodically, Merrill Lynch surveys its customers to determine customer satisfaction levels. They want to determine the impact of experience on the satisfaction ratings of their consultants. The following are samples of survey ratings for two consultants:
Consultant A Consultant B
n 16 10
mean 6.82 6.25
s .64 .75
Test the assumption that Consultant A has higher satisfaction ratings at the 5% significance level. Show all steps.