The confidence level was created at 2 standard deviations B. 95.44%.
Two-tailed P value in the table at 2.0= 0.04550
hence confidence level at standard deviation 2= 1-0.04550= 0.9545
= 95.45% (approx)
so option B is correct
Standard deviation is a measure of the amount of variation or spread in a set of values. A low standard deviation indicates that the values tend to be closer to the mean of the set, while a high standard deviation indicates that the values are more spread out.
Standard deviation is a measure of how spread out the data are about the mean. A low standard deviation means that the data are clustered around the mean, and a high standard deviation means that the data are more scattered.
The standard deviation shows how spread out the data is. This is a measure of how far each observation is from the mean. For each distribution, approximately 95% of the values are within 2 standard deviations of the mean.
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A. 99.74%
B. 95.44%
C. 86.85%
D. 72.50%
E. 68.26%
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