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exis [7]
3 years ago
9

Solve this equation.

Mathematics
1 answer:
dsp733 years ago
5 0

Answer:

X=1

Step-by-step explanation:

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An insurance company study shows that 9% of U. S. adults have diabetes. Suppose 8 US adults are selected at random. LetX be the
Bogdan [553]

Using the binomial distribution, it is found that:

  • The mean of X is of 0.72.
  • The standard deviation of X is of 0.81.

<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:

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

For this problem, the parameters are given as follows:

n = 8, p = 0.09.

Hence the mean and the standard deviation are, respectively:

  • E(X) = np = 8 x 0.09 = 0.72.
  • \sqrt{V(X)} = \sqrt{np(1-p)} = \sqrt{8 \times 0.09 \times 0.91} = 0.81

More can be learned about the binomial distribution at brainly.com/question/24863377

#SPJ1

3 0
2 years ago
Help needed ASAP!!!
horrorfan [7]

Answer:

Angle b = 30 degrees

Step-by-step explanation:

3x = 90.

X= 30

Angle b = 30 degrees

7 0
3 years ago
Read 2 more answers
Step functions<br><br> I don’t get what’s it’s trying to tell me to do not do I know where to begin
IceJOKER [234]

Answer:

[7.8] = 8

[0.75] = 1

...

Step-by-step explanation:

step function takes the value of the greatest integer

5 0
3 years ago
Which postulate or theorem proves that these two triangles are congruent?
timofeeve [1]

what was the right answer?

3 0
3 years ago
HELp show work too pleaseee
xxTIMURxx [149]

Answer:

its C LOL

Step-by-step explanation:

4x1=4

12x4=48

4/48

8 0
3 years ago
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