An industrial psychologist consulting with Target recorded the number of complaints for five stores for one month as 2, 2, 4, 6, and 8. Customer relations training was implemented across all chains and the number of complaints for the same stores were recorded as 1, 1, 2, 3, and 2. Using the .05 significance level, was there a significant change in reported complaints at the selected Target stores?

Note: Show ALL steps related to calculations and hypothesis testing (