The number of all possible 3-person groups

The number of all possible groups consisting of 1 girl and 2 boys

The probability is
Answer:
Step-by-step explanation:
Given quadratic equation:

The solution of the given quadratic eqn is given by using Sri Dharacharya formula:

The above solution is for the quadratic equation of the form:

From the given eqn
a = 1
b = 3
c = 
Now, using the above values in the formula mentioned above:



Now, Rationalizing the above eqn:


Solving the above eqn:

Solving with the help of caculator:

The precise value upto three decimal places comes out to be:

The
chance to land on the number three is only a ¼ or 0.25 chance. Knowing that we
can also understand the law of large numbers. The law of large numbers states
that as the number of spins gets very large, eventually the experimental
probability will reach the theoretical probability. Eight spins of the spinner
is not a large number, so the probabilities will be different. In this case
resulting in zero times landing on three. Therefore, Megan should not be
concerned that the spinner is unfair.