題目:若隨機變量X服從二項分布B(n, p),且E(X) = 3,D(X) = 2,則n和p的值分別為
2024-11-13
題目:若隨機變量X服從二項分布B(n, p),且E(X) = 3,D(X) = 2,則n和p的值分別為
A. n = 3, p = 1/2 B. n = 6, p = 1/2 C. n = 9, p = 1/3 D. n = 12, p = 1/4
正確答案:B
試題解析:暫無
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題目:若隨機變量X服從二項分布B(n, p),且E(X) = 3,D(X) = 2,則n和p的值分別為
A. n = 3, p = 1/2 B. n = 6, p = 1/2 C. n = 9, p = 1/3 D. n = 12, p = 1/4
正確答案:B
試題解析:暫無