The mean and standard deviation of a set of 11 observations of time are 8 seconds and 2.5 seconds respectively. An observation, equal to the mean, is removed from the dataset. The new variance in seconds is approximately: A. 6.51 sec B. 7.00 sec C. 7.53sec D. 6.94 sec

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The mean and standard deviation of a set of 11 observations of time are 8 seconds and 2.5 seconds
respectively. An observation, equal to the mean, is removed from the dataset. The new variance in
seconds is approximately:
A. 6.51 sec
B. 7.00 sec
C. 7.53sec
D. 6.94 sec
Transcribed Image Text:The mean and standard deviation of a set of 11 observations of time are 8 seconds and 2.5 seconds respectively. An observation, equal to the mean, is removed from the dataset. The new variance in seconds is approximately: A. 6.51 sec B. 7.00 sec C. 7.53sec D. 6.94 sec
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