can you help me solve this

Question

A poll is given, showing 35% are in favor of a new building project.

If 9 people are chosen at random, what is the probability that at least 5 of them favor the new building project? 

Probability =    (Please show your answer to 4 decimal places)

Answer 1

Use binomial probability formula here

P(x successes in n tries) = n! p^x (1-p)^n-x

------

x! (n-x)!

where n = 9, p = 0.35. Compute probability for x = 5, 6, 7, 8 and 9, then add the probabilities together.