7.7) Oxygen consumption (microliters.g hr-1) was measured in twelve lizards before and after thyroxin injections. (Thyroxin is a hormone known to be responsible for increasing metabolism). Analyze and interpret.

Lizard Before After

1 26.3 28.0

2 24.2 25.7

3 23.1 22.9

4 21.6 22.4

5 24.5 25.2

6 23.3 25.4

7 21.8 23.0

8 22.9 23.4

9 25.7 25.5

10 24.1 24.8

11 25.8 25.6

12 26.1 25.7