List some similarities and differences between this research question and our first research question looking at the average difference in first and second E. coli counts.

Let’s look at one last research question. As a general rule, the flow rate of a water filter in good working condition should be around 1,000 mL/min. Let’s test to see whether these water filters had an average flow rate that is significantly different than 1,000 mL/min. (See data set Ecoli-flow.)