G Guest Guest Apr 13, 2006 #1 If a student prepares for a test and scores 15 out of 20 on the practice exam, what is the probability of scoring 10 out of 10 on the exam?
If a student prepares for a test and scores 15 out of 20 on the practice exam, what is the probability of scoring 10 out of 10 on the exam?
G Gene Senior Member Joined Oct 8, 2003 Messages 1,904 Apr 14, 2006 #2 His probability of being correct on any given question is 15/20 = 3/4 For 10 questions correct it is (3/4)^10
His probability of being correct on any given question is 15/20 = 3/4 For 10 questions correct it is (3/4)^10
