7. A gardener has developed two new plans for water, sunlight and nutrients, A and B, which they
hope will help their plants grow more quickly than their original plan. To determine whether the
plants grow more quickly with the new treatments, the gardener chooses 50 random plants.
Each plant gets treatment A and treatment B in a randomly assigned order, and the gardener
records their growth. Which of the following best describes this study?
a.
This study is not well designed because treatments A and B are not compared with the
original plan.
b.
This study is not well designed because there is no replication. Each plant only got each
treatment only once.
c. This study is not well designed because the sample may not have been randomly
selected.
d.
e.
This study is not well designed because each plant should get the two new treatments in
the same order.
This study is not well designed because there is not enough replication with only 50
plants.
