Soal SMA · Soal cerita · Kesulitan 3/5
A researcher claims that a new drug reduces recovery time from a certain illness. In a trial, the average recovery time for patients taking the drug was 5 days, while for those taking a placebo it was 6 days. The standard deviation was 2 days for both groups. Which of the following is the most appropriate conclusion?
- A.The drug is effective because 5 days is less than 6 days.
- B.The drug might be effective, but statistical significance needs to be assessed.
- C.The drug is ineffective because the difference is only 1 day.
- D.The drug is effective because the standard deviations are equal.
Kunci jawaban & pembahasan
Jawaban: The drug might be effective, but statistical significance needs to be assessed.
A difference of 1 day with a standard deviation of 2 days may not be statistically significant; further analysis is needed.
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