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4 years ago

12

if a seed is planted it has a 75% chance of growing into a healthy plant. If 7 seeds are planted what is the probability that ex

actly 4 don't grow

1 answer:

Colt1911 [192]4 years ago

5 0

NCr*P^r*q^(n-r)
7C4*. 75^4*. 25^(7-4)
35*. 75⁴*. 25³
35*. 316*. 016
11.06*. 016
. 1769
=. 177

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