According to American Hospital Association data, about 30% of all hospitals in the United States are rural community hospitals.

If a random sample of 80 U.S. hospitals was drawn, what is the probability that fewer than 20 would be rural community hospitals? (Round Z Values to 2 decimal places, eg: 15.25. Round answer to 4 decimal places, eg: 0.2487)

Guidance on how to put this in excel would be appreciated!