Mr. Lee is planning to go fishing this weekend. Assuming that the number of fish caught per hour follows a Poisson distribution with mean 0.6, find:
a) The probability of catching exactly 1 fish in an hour.
b) The probability of catching at least 2 fish in an hour.
c) The expected number of fish caught in 3 hours.
d) The standard deviation of the number of fish caught in 1 hour.