Question

Ho- People who use medication to decrease anxiety have success in eliminating the symptoms of anxiety.

Ha- People who don’t use medication have increased risk for developing other symptoms.

From the hypothesis listed above If you conducted a statistical test based on these hypotheses and found a statistically significant result, what would that mean from both a statistical and practical standpoint? (Be sure to use the phrases “null hypothesis” and “effect size” in your answer).

Answer 1

From a statistical point of view, we can conclude that as the results of the test are significant, we can reject the null hypothesis. We can say that we have enough evidence to say that people who don't use medication have increased risk for developing symptoms.
When the statistical significance of the above result tells us that an effect exists, the practical significance tells us the magnitude of the effect. From a practical standpoint, we have to figure out if the effect was practically large to be meaningful in the practical world.