A teacher wants to use statistics to compare the effectiveness of two different methods of instruction.

First, read the details of the teacher's analysis by clicking Frog Anatomy.

(FROG ANATOMY: https://myonline.norwich.edu/pluginfile.php/1178046/mod_forum/intro/Statistical%20analysis%20to%20compare%20teaching%20methods.pdf )

The teacher used the correct formulas. However, she cannot make the claim that the computer simulation improves the students' scores.

1. Why are her conclusions incorrect?
2. Give some examples of flaws in her design and what she could do to improve her study.