Assume each newborn baby had a probability of approximately 0.54 of being female and 0.46 of being male. For a family of four children, let X = number of children who are girls. Use StatCrunch to find the probability that the family has two girls and two boys. Please note: You must enter your answer as a decimal (not a percentage) rounded to four decimal places with a zero in front of the decimal point. Example: 0.6547

0.3702

Step-by-step explanation:

For each newborn, there are only two possible outcomes. Either it is a female, or it is a male. The probability of a newborn being male or female is independent from other newborns. So we use the binomial probability distribution to solve this problem.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

In which is the number of different combinations of x objects from a set of n elements, given by the following formula.

And p is the probability of X happening.

Assume each newborn baby had a probability of approximately 0.54 of being female and 0.46 of being male. For a family of four children, let X = number of children who are girls.

This means that

Find the probability that the family has two girls and two boys.

Two girls, so

The answer is 0.3702

to plot points   for x just start at the origin (middle) and go to the left however many times it say(if the number is a positive) if the number is a negative then go right however many times it says if it is 0 go nowhere

now keep you pencil there and go up however many times it says on y(if it is positive) if it is negative then go down however many times it says. if it says 0 go nowhere.

you have just plotted a point! now when you finish plotting all of them connect them with a ruler

plot each point as (-3, 7), (0,4), (3,1), (8,-4)   in the parenthesis on the left of the comma is x and the right is y.

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step-by-step explanation: