You conduct a thorough statistical analysis of the capabilities of three machines and conclude that machine number 3 is giving a consistently sub-standard performance. Your recommendation is, due to the machine's age and the costs of repair, it should be replaced with new equipment. The line supervisor stated that there was no value in conducting an analysis to conclude what was already known to be fact. What can be stated about these two contrasting approaches?
a. The statistical analysis validates the supervisors intuition.
b. The supervisor is right, there was no need for a detailed analysis.
c. Neither conclusion is necessarily right, there is always room for error.
d. More data may be needed to convince the supervisor