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Question
In a hearing test, subjects estimate the loudness (in decibels) of a sound, and the results are (mean = 70): 68, 67, 70, 71, 68, 75, 68, 62, 80, 73, 68.What is the variance?
A. 18
B. 4.73
C. 22.40
D. 324
E. 6.76
Answer
This answer is hidden. It contains 2 characters.
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