Q52Section I (Objective (Q1–Q80))52 of 80

Design of Experiments — critical difference between machine means

A manufacturing company wishes to determine whether one of the three machines $A$ , $B$ and $C$ is faster than the others in producing a certain output. The mean hourly output of the three machines is respectively 32, 37 and 27. It is given that at 5% level of significance, the critical difference between any two means to be significant is $5\cdot 62$ . Which one of the following is correct?

Pick an option to check your answer. In a mock test a wrong answer here costs 0.83 mark.

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