Problemas
The excerpt is from an article that Roberto read for science class called "Using the Scientific Method to Study Tomatoes." The student performed an experiment to test his hypothesis about sunlight and plant height using two plants He kept everything the same between two tomato plants except he exposed them to different amounts of sunlight. He also used a third plant as a control group, or a group in which no variables are manipulated to confirm the results. Roberto critiqued the work Which problem did Roberto most likely identify? The sample size is too small Too many variables are manipulated It is not possible to keep the conditions the same Controls should only be used in studies of animals
Roztwór
Roxana
maestro · Tutor durante 5 años
4.6
(311 Votos)
Respuesta
The sample size is too small.
Explicación
## Step 1The problem at hand is a critique of an experiment conducted by a student. The student's experiment involved two tomato plants, one exposed to more sunlight than the other, and a third plant was used as a control group. The student's experiment was designed to test the hypothesis that sunlight affects plant height.## Step 2The student's experiment had two plants exposed to different amounts of sunlight, which is a variable. The third plant was used as a control group, which is a standard practice in experiments to ensure that the results are due to the variable being tested and not other factors.## Step 3However, the student's experiment only had two plants, which is a small sample size. In scientific experiments, a larger sample size is generally preferred to ensure that the results are statistically significant and not due to random chance.