2 ms·
My thoughts: The exam can be characterized as "surprising" until the end of Thursday's class. Getting the probability at the end of each day for the exam to be
by antonios 15y ago
My thoughts:
The exam can be characterized as "surprising" until the end of Thursday's class. Getting the probability at the end of each day for the exam to be made from now on, we have (M=Monday, T=Tuesday etc):
End of Sunday : P(exam=M,T,W,T,F|S)= 1/5
End of Monday : P(exam=T,W,T,F|M)= 1/4
End of Tuesday : P(exam=W,T,F|T)= 1/3
End of Wednesday : P(exam=T,F|w)= 1/2
End of Thursday : P(exam=F|T) = 1
So, after the end of Thursday class, the probability of the exam is 1, so the students cannot be surprised any more as they are sure that they will be examined Friday. This means, that in every day except Friday the students can be surprised by the exam.
Anybody to point me where the above interpretation is wrong?