In a Hearing Test,subjects Estimate the Loudness (In Decibels)of a Sound,and

question 34

Multiple Choice

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

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