Question: The efficiency E of a process is determined to be in the interval 0.81 < E < 0.93 with a 95% confidence. That is: Your

The efficiency E of a process is determined to be in the interval 0.81 < E < 0.93 with a 95% confidence. That is:

Your answer:

the true efficiency is 95% with an confidence between 0.81 and 0.93

we are 95% confident that the mean efficiency is between 0.81 and 0.93

we are highly confident that the mean efficiency is 95%

the interval 0.81 < E < 0.93 contains 95% efficiency

the mean efficiency is between 0.81 and 0.93

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