Using the binomial distribution, it is found that the mean and the standard deviation of variable x are given as follows:

<h3>What is the binomial probability distribution?</h3>
It is the probability of exactly <u>x successes on n repeated trials, with p probability</u> of a success on each trial.
The expected value of the binomial distribution is:
E(X) = np
The standard deviation of the binomial distribution is:

In this problem, we have that the parameters are given as follows:
n = 4, p = 0.75.
Hence the mean and the standard deviation are given as follows:
- E(X) = np = 4 x 0.75 = 3.
More can be learned about the binomial distribution at brainly.com/question/24863377
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Answer:
Perimeter of rectangle = 2(l+b)
= 2(8+5)cm
= 2*13 cm
= 26cm
Option C. It’s where it’s decreasing over the entire interval.
Answer:
0.105 or 21/200
Step-by-step explanation:
2/8= 0.375 cups
0.375x0.72= 0.27 cups or 27/100
0.375-0.27= 0.105