Q. 9 A coin is tossed thrice. Let X be the event that head occurs in each of the first
two tosses. Let Y be the event that a tail occurs on the third toss. Let Z be the
event that two tails occur in three tosses.
Based on the above information, which one of the following statements is TRUE?
(A) X and Y are not independent
(B) Y and Z are dependent
(C) Y and Z are independent
(D) X and Z are independent
Answer: (D)
Explanation:
