Of all the trees planted by a landscaping firm, 45% survive. what is the probability that 13 or more of the 15 trees they just planted will survive

ANSWER:  

The probability for 13 or more of the 15 trees they just planted will survive is 0.00110702414

SOLUTION:

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

x=17

step-by-step explanation:

solve 3x-24=x+10

then that makes it 2x=34 because you subtract an x from both sides to get rid of the one on the right, and then you add 24 to both sides to get rid of the 24 on the left

divide by both sides by 2 to get your answer so that you can get your answer

a is the correct