SPM – MCQ 76 – Error in a statistical study

A randomized trial comparing efficacy of two regimens showed that difference is statistically significant with p< 0.001 but in reality the two drugs do not differ in their efficacy. This is an example of: a) Type-I error (alpha error) b) Type-II error (beta error) c) I alpha d) I beta Correct answer : a) Type-I error (alpha error)