Question

5. A student hypothesized that lettuce seeds would not germinate (begin to grow) unless they were covered with soil. The student planted 10 lettuce seeds under a layer of soil and scattered 10 lettuce seeds on top of the soil. The data collected are shown in the accompanying table.
Data Table
To improve the reliability of these results, the student should
A. conclude that darkness is necessary for lettuce seed germination
B. conclude that light is necessary for lettuce seed germination
C. revise the hypothesis
D. repeat the experiment using a larger sample size

Answer 1

To improve the reliability of the results from the experiment, the student should:

**D. repeat the experiment using a larger sample size.**

This would help to ensure that the results are more consistent and reduce the chances of error or anomalies affecting the conclusions drawn from the experiment.