In order to determine if treatment X is successful in improving eyesight, a research study was conducted. From a large population of people with poor eyesight, 300 participants were selected at random. Half of the participants were randomly assigned to receive treatment X, and the other half did not receive treatment X. The resulting data showed that participants who received treatment X had significantly improved eyesight as compared to those who did not receive treatment X. Based on the design and results of the study, which of the following is an appropriate conclusion?
In order to determine if treatment X is successful in improving eyesight, a research study was conducted. From a large population of people with poor eyesight, 300 participants were selected at random. Half of the participants were randomly assigned to receive treatment X, and the other half did not receive treatment X. The resulting data showed that participants who received treatment X had significantly improved eyesight as compared to those who did not receive treatment X. Based on the design and results of the study, which of the following is an appropriate conclusion?
The correct option is A Treatment X is likely to improve the eyesight of people who have poor eyesight
Experimental research
is a method used to study a small group of people and generalise the results to
a larger population. However, in order to make a generalisation involving cause
and effect:
1. The population must be well
defined.
2. The participants must be selected
at random.
3. The
participants must be randomly assigned to treatment groups.
When these conditions are met, the results
of the study can be generalised to the population with a conclusion about cause
and effect. In this study, all conditions are met and the population from which
the participants were selected are people with poor eyesight. Therefore, a
general conclusion can be drawn about the effect of Treatment X on the population of people with
poor eyesight.
Experimental research is a method used to study a small group of people and generalise the results to a larger population. However, in order to make a generalisation involving cause and effect:
1. The population must be well defined.
2. The participants must be selected at random.
3. The participants must be randomly assigned to treatment groups.
When these conditions are met, the results of the study can be generalised to the population with a conclusion about cause and effect. In this study, all conditions are met and the population from which the participants were selected are people with poor eyesight. Therefore, a general conclusion can be drawn about the effect of Treatment X on the population of people with poor eyesight.
