Biostatistics · NEET PG Preparation Community Medicine (PSM)
A clinical trial is conducted to compare a new antihypertensive drug with a standard drug. The mean reduction in systolic blood pressure is 15 mmHg i…
Practice question from Biostatistics (NEET PG Preparation Community Medicine (PSM)), with the correct answer and a step-by-step solution.
easy · MCQ · Q-97856C
A clinical trial is conducted to compare a new antihypertensive drug with a standard drug. The mean reduction in systolic blood pressure is 15 mmHg in the new drug group and 12 mmHg in the standard group, with a calculated p-value of 0.03. Assuming the significance level (alpha) was set at 0.05, what is the correct statistical conclusion?
- A.Accept the null hypothesis because the difference in means is small.
- B.Reject the null hypothesis and conclude there is a statistically significant difference.Correct answer
- C.Reject the alternative hypothesis because the p-value is less than 0.05.
- D.Accept the alternative hypothesis with a 97% confidence level.
Solution
Since the p-value () is less than the predetermined significance level , we reject the null hypothesis of no difference and conclude that the observed difference is statistically significant.
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