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13-05-2017
Mathematics

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For a normal distribution, what percentage of values lies within two standard deviations of the mean?

99.7%

97%

68%

95%

I think it is D, may someone please verify?

Respuesta :

niyonzimayvan1 niyonzimayvan1

13-05-2017

The answer is indeed D. If you check the normal distribution curve you get that within 1 standard diviation its
34%+34%=68%
Within 2 it's 34+34+13.5+13.5= 95%
And within 3 it's 34+34+13.5+13.5+2.5+2.5=100%

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