A student takes a 6 question multiple choice quiz with 4 choices for each question. If the
student guesses at random on each question, what is the probability that the student gets
exactly 3 questions correct?
والجواب 0.132
كيف طريقه حلها
الرجاء ردوا بسرعة 
|
n=6
x=3
p=1/4
q=3/4
او العكس بين p وq مو متأكدة
بعدين التعويض بالقانون حق ال binomial probability