Question

# If a seed is planted, it has a 75% chance of growing into a healthy plant....

If a seed is planted, it has a 75% chance of growing into a healthy plant. If 8 seeds are planted, what is the probability that exactly 3 don't grow?

According to Bernoulli Trials

Probability of getting r times success in n number of trials is equal to

*(Probability of success) r * (Probability of failure) n - r

Here,

Probability of success (Seed grows into a healthy plant) = 75/100

= 3/4

Probability of failure = 1 - Probability of success

= 1 - (3/4)

= 1/4

So,

Probability that exactly 3 don't grow OR exactly 5 grow

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