Teaching UGC NET Mock Test Series 2025 (Paper 1 & 2) Business Statistics and Research Methods

किसी पॉइसन वितरण के चर X के लिए, P(X = 0) = 2P(X = 1), तो इसका मानक विचलन होगा:

1
\(\sqrt{2}\)
2
0.5
3
\(\sqrt{0.5}\)
4
2
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