help!..f5 math問題!!!!－xvnjcke的部落格

標題:

help!..f5 math問題!!!!

發問:

Science questions about simple scientific investigation (10)@1@
~Help Me Find 英中and中中~ 該選那些中學-_0
php+mysql的問題5個@1@

此文章來自奇摩知識+如有不便請留言告知

(a)0.705 (b)(1)0.1418 但唔識計b(ii)同b(iii) 請教教>
最佳解答:

Suggested Solution: (a) (5/10)(0.9) + (3/10)(0.65) + (2/10)(0.3) = 0.705 b(i) Let X be the no. of questions which Wendy answered correctly. Then X ~ Bin(10, 0.705) P(X
其他解答:

b(ii)0.08505 b(iii)0.0443