Hi, it will be a very silly question, excuse me plz.(adsbygoogle = window.adsbygoogle || []).push({});

I am wondering whether

3/(sqrt(2pi delta^2)) exp(-x^2/(2delta^2)) is still a normal distribution please?

where mean is 0, delta^2 is the variance.

Thank you very very much.

Also, how to understand this related to the kurtois please? Many many thanks again.

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# Is 2 times normal distribution still a normal distribution please?

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