We flip a coin 100 times (n = 100) and note that it only comes up heads 20% (p = 0.20) of the time. The mean and standard deviation for the number of times the coin lands on heads is μ = 20 and σ = 4 (verify the mean and standard deviation). Solve the following:

a. There is about a 68% chance that the number of heads will be somewhere between ___ and ___.

b. There is about a ____chance that the number of heads will be somewhere between 12 and 28.

c. There is about a ____ chance that the number of heads will be somewhere between eight and 32.