A fair coin was tossed 150 times in a classroom activity. The students observed that heads appeared 82 times.
a. (i) Calculate the empirical probability of getting a head.
b. (ii) Determine the empirical probability of getting a tail.
c. (iii) If the same coin is tossed 600 times under similar conditions, how many times would you expect a tail to occur? Show your calculation clearly.