Shop Til' U Drop magazine carried out a research and discovered that the 60% of shoppers spends an average of an hour in the Pasadena Mall. Mr. August decides to survey 8 shoppers and asked them how long they spend in the mall. Using the information provided. What is the probability that:
a) More than 4 shoppers spend an average of an hour at the mall.
b) Up to 4 shoppers spend an average of an hour at the mall.
c) Less than 6 shoppers spend an average of an hour at the mall
d) What is the average number of shoppers who spend about an hour at the mall?