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In a normal distribution curve, how many percentage of the data (area) fall within two standard deviation of the mean?In a normal distribution curve, how many percentage of the data (area) fall within two standard deviation of the mean?  mcq given below:

Q. In a normal distribution curve, how many percentage of the data (area) fall within two standard deviation of the mean?

(a) 68.2%
(b) 90.6%
(c) 95.4%
(d) 99.6%

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Ans:(c) 95.4%  
 

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