The accumulated effect of the lack of rain and snow these past two years is that most of New Jersey is still considered to be in a moderate drought. You can monitor this on the Drought Impact page of the National Drought Mitigation Center website, http://drought.unl.edu/impacts/us/usimpact.htm.

Knowing this, I guess we should be happy for rain. I only wish that it wouldn't happen on the weekend, and especially on a holiday weekend!

I heard the extended forcast for this coming weekend. There's a POP (probability of precipatation) of 70% for Saturday and a POP of 30% on Sunday.

Does this mean it will certainly rain this weekend? Explain how you can determine this in terms of probabilities.

Can you suggest a way to represent this with a branching diagram, an area representation and/or a Fathom simulation?