Assume there is a 50% chance of having a boy. Find the probability of exactly two boys in three births.

0.375

Step-by-step explanation:

Given that there is 50% chance of having a boy in a single birth.

Let it be represented by p, so

p=50%=0.5

According to Bernoulli's theorem, the probability of exactly r success in n trials is

where p is the probability of success.

So, the probability of exactly 2 boys (success) in a total of 3 birth (trials) is

As p=0.5, so

=0.375

Hence, the probability of exactly 2 boys in a total of 3 birth is 0.375.

the battle of gettysburg is considered the "high water mark" of the confederacy because it marked the greatest advance of the confederate forces against the union.

x = -5

step-by-step explanation: