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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I also need this answer so when you find out let me know
Choices given were:
<span>A. personal
B. business
C. government
</span>
Among the choices, macroeconomics focus on C. GOVERNMENT.
Macro means large or large-scale. Macroeconomics deal with economies in a larger scale like national, regional, or global market which government is involved with.
Answer:
first one is 32
the second one is 53
Step-by-step explanation:
(2c) / (3b)
(2*6) / (3*2) =
12/6 =
2 <===