SOLUTION: If a seed is planted, it has a 70% chance of growing into a healthy plant. If 7 seeds are planted, what is the probability that exactly 4 don't grow?

Algebra ->  Probability-and-statistics -> SOLUTION: If a seed is planted, it has a 70% chance of growing into a healthy plant. If 7 seeds are planted, what is the probability that exactly 4 don't grow?       Log On


   

Question 918649: If a seed is planted, it has a 70% chance of growing into a healthy plant.
If 7 seeds are planted, what is the probability that exactly 4 don't grow?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
p(grow) = .70, p(not grow) = .30
n = 7
P(x = 4 not grow) = binompdf(7, .30, 4)
Or
P = (7C4)(.30)^4(.70)^3