Welp that was wrong sorry lol. Uuh, what he said^ :
Using the binomial distribution, there is a 0.9983 = 99.83% probability that at most eleven of the thirteen babies are girls.
<h3>What is the binomial distribution formula?</h3>
The formula is:


The parameters are:
- x is the number of successes.
- n is the number of trials.
- p is the probability of a success on a single trial.
For this problem, the values of the parameters are:
p = 0.5, n = 13
The probability that at most eleven of the thirteen babies are girls is:

In which
P(X > 11) = P(X = 12) + P(X = 13)
Then:



So:
P(X > 11) = P(X = 12) + P(X = 13) = 0.0016 + 0.0001 = 0.0017

0.9983 = 99.83% probability that at most eleven of the thirteen babies are girls.
More can be learned about the binomial distribution at brainly.com/question/24863377
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Answer: P ≈ 469
Step-by-step explanation:
I think it’s a b c I could give you the d later
Each multiple choice is worth 4 points, and X is the number of questions he get's right. For example, he gets 3 right: 4 x 3 = 12 points in total.
The same goes for the <span>word problems. Y represent the </span><span>the number of correct answers so, for example: he gets 4 right and each one is worth 8 points: 8x4
</span>
Since he needs to have a least 50 points, that means that he can have 50 or more than that. That can be written as: <span>≥
So, as i explained, the only possible option is D.</span>
<span> 4x + 8y ≥ 50 </span>