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Sergio039 [100]
2 years ago
7

What the answer is to question number 4

Mathematics
1 answer:
cestrela7 [59]2 years ago
3 0
Hey there!
The answer is D. 1/5
An explanation is in the attached image below.
Hope this helps!

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Suppose that a recent poll found that 49​% of adults believe that the overall state of moral values is poor. Complete parts​ (a)
Lunna [17]

Answer:

The mean of X is 122.5 and the standard deviation is 7.9.

Step-by-step explanation:

For each adult, there are only two possible outcomes. Either they believe that the overall state of moral values is poor, or they do not believe this. The probability of an adult believing this is independent of other adults. So we use the binomial probability distribution to solve this question.

Binomial probability distribution

Probability of exactly x sucesses on n repeated trials, with p probability.

The expected value of the binomial distribution is:

E(X) = np

The standard deviation of the binomial distribution is:

\sqrt{V(X)} = \sqrt{np(1-p)}

In this problem, we have that:

n = 250, p = 0.49

So

E(X) = np = 250*0.49 = 122.5

\sqrt{V(X)} = \sqrt{np(1-p)} = \sqrt{250*0.49*0.51} = 7.9

The mean of X is 122.5 and the standard deviation is 7.9.

3 0
3 years ago
16 + 36 Drag numbers to the lines to create an equivalent expression in factored form
Goshia [24]
Answer:
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this is most likely the correct answer
7 0
3 years ago
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Jasmine found a wooden jewelry box shaped like a right rectangular prism. What
Eduardwww [97]

Answer:

8cm

Step-by-step explanation:

8 because \sqrt[3]{8} is 2

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X = 1 and y = -3 satisfy x - 2y = 5<br> True or false
hoa [83]

Answer:

false

Step-by-step explanation:

<u>Step :1</u>

Given x- 2 y =5 .......(1)

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so it is false

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