PRC-2 · Chapter 12 · Question 40 of 55
If a researcher calculates a 99% 'Confidence Interval' for the average weight of a product to be [45kg, 55kg], what does this statistical range signify?
Test yourself: pick an answer
Reveal answer & explanation
Correct answer: A) An interval within which the researcher is 99% confident the true unknown population mean lies.
Explanation
A confidence interval provides a mathematically derived range. The percentage (99%) represents the level of confidence that the actual, true population parameter falls somewhere within that specific bracket.
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