<u>ANSWER: </u>
The probability for 13 or more of the 15 trees they just planted will survive is 0.00110702414
<u>SOLUTION: </u>
Given,
The total number of plants is, n=15
The chance of survival of trees is, p=45%.
Probability of getting success p(success) =
P(success) =
P(success) = 0.45
Binomial distribution formula is given as
In our case, x is greater than or equal to 13, i.e. x 13
The probability for 13 or more of the 15 trees they just planted will survive is given by
+
+
on simplification we get
=0.00098554703 + 0.0001151938 + 0.00000628329
= 0.00110702414
Hence, the probability for 13 or more of the 15 trees they just planted will survive is 0.00110702414