The weather can be sunny cloudy, rainy, snowy, or overcast.

a) it rains 7 days out of a 30 day month. What is the relative frequency of rainy days for that month?

b) Data suggests that rainy days are twice as likely as snowy days, and sunny days are twice as likely as rainy days. Sunny, cloudy, and overcast days are equally likely. Write a probability distribution chart for this situation.