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

द्विपद बंटन जिसमें n = 30, q = 0.7 है, के लिए माध्य और प्रसरण किसके बराबर होगा:

1
21 और \(\sqrt{6.3}\)
2
9 और \(\sqrt{6.3}\)
3
9 और 6.3
4
21 और 6.3
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