رد: سؤال جنني في الاحصااااء
A multiple choice quiz consits of 8 quetions each with 7 possible answers if a student guesse the answer of each quetion then
A- the probability of at least one correct answer is ?
B-the mean number of correct answers is
C-the probability of guessing exactly two correct quetions is
التعديل الأخير تم بواسطة عبودي55 ; 06-06-2011 الساعة 10:22 PM.
سبب التعديل: mistakes
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