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TABLE 8-2
A quality control engineer is interested in the mean length of sheet insulation being cut automatically by machine. The desired mean length of the insulation is 12 feet. It is known that the standard deviation in the cutting length is 0.15 feet. A sample of 70 cut sheets yields a mean length of 12.14 feet. This sample will be used to obtain a 99% confidence interval for the mean length cut by machine.
-Referring to Table 8-2, the confidence interval goes from ________ to ________.
Weber's Law
A principle stating that the change in a stimulus that will be just noticeable is a constant ratio of the original stimulus.
Just Noticeable Difference
The smallest change in intensity of a stimulus that can be detected by the sensory system.
Psychophysics Term
Relates to the study of the relationship between physical stimuli and the sensations and perceptions they produce.
Absolute Difference
A measure of the total amount of difference between two quantities or numbers.
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