A study compared the impact of pollution on two different rivers by

1. A study compared the impact of pollution on two different rivers by measuring the diversity of species in each river’s floodplain. The researchers randomly selected eight 50x20 meter plots along each river and recorded the total number of species of plants in each plot, as shown below:
Alamosa River
Navajo River
9 14 6 16 8 26 15 23 7 18 4 7 12 11 10 21 Carry out the appropriate test to determine if the number of plant species differs in the floodplains of these two rivers. Include all steps for full credit. (5pt)

2. Suppose that every morning, you swim 10 lengths of the outdoor lap pool in Gregory. You decide to keep track of the time it takes you to complete your swim as well as your pulse rate just after you get out of the water for a random sample of 15 different days. You confirmed all relevant assumptions were met:

                      Time (minutes)                  Pulse (beats/min) Mean                   13.60                                    140.08 St. Dev.                 1.75                                      15.13