A coin is flipped seven times.
a. What is the probability (in fraction form) of getting all tails?
b. What is the probability (in fraction form) of getting a tail on the seventh toss, given the first six tosses were all tails?
c. Compare the results you found in parts (a) and (b).
d. A student says the results you found in parts (a) and (b) should be equal because both are the probability of getting all tails. What would you tell the student?