Question

1. 15.34 Treating insomnia. Belsomra is a drug prescribed for the treatment of insomnia. A randomized, placebo-controlled clinical trial found that patients assigned to take Belsomra for three months fell asleep 35 minutes faster, on average, than they did before the study started—a statistically significant improvement. By comparison, patients assigned to take a placebo for three months fell asleep 27 minutes faster than they did originally. The difference between the two groups was statistically significant (reported as P<0.01)
   1. Would you consider an effect size of falling asleep 35 minutes sooner important in the context of patients suffering from insomnia? Explain your answer.
   2. The difference between taking Belsomra and taking a placebo was, on average, falling asleep 8 minutes faster with Belsomra. Would you consider an effect size of 8 minutes important in the context of patients suffering from insomnia? Explain your answer.
   3. Which limitation of statistical significance does this study illustrate?

Answer 1

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