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Question: What percentage of area (approximately) under the normal distribution curve lies between a standard deviation of 1 and 2?


A ) 15%
B ) 13%
C ) 27%
D ) 30%

Steps to derive



2 From the figure, area of the shaded region under the curve between the standard deviation of 1 and 2 = 95% - 68% = 27%



Hence the right answer is Option C

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