5. A coin is selected from a batch of special coins, for which the probability of landing heads is continuously and uniformly distributed between 0.25 and 0.75. Random variable, W, represents the...

Extracted text: 5. A coin is selected from a batch of special coins, for which the probability of landing heads is continuously and uniformly distributed between 0.25 and 0.75. Random variable, W, represents the number of tosses until a head is observed. a. Find the expected value of W. b. Find the variance of W.