3 years ago

Just type the numerical solution. 2 (n + 4) = 8-n

Mathematics

1 answer:

Vlad1618 [11]3 years ago

4 0

2 (n+4)=8-n like this

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An article claims that 12% of trees are infested by a bark beetle. A random sample of 1,000 trees were tested for traces of the

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Answer: 0.6812

Step-by-step explanation:

Let p be the population proportion of trees are infested by a bark beetle.

As per given: p= 12%= 0.12

Sample size : n= 1000

Number of trees affected in sample = 1000

Sample proportion of trees are infested by a bark beetle. = $\hat{p}=\dfrac{127}{1000}=0.127$

Now, the z-test statistic : $z=\dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}$

So, $z=\dfrac{0.127-0.12}{\sqrt{\dfrac{0.12\times 0.88}{1000}}}$

$z=\dfrac{0.007}{\sqrt{\dfrac{0.1056}{1000}}}\\\\\\=\dfrac{0.007}{\sqrt{0.0001056}}\\\\\\=\dfrac{0.007}{0.010276}\approx0.6812$

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3 years ago

If the coordinates of a point p(m-3 , -6) = p(-7 , -6), then find the value of m .

Ulleksa [173]

Answer:

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Step-by-step explanation:

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2 years ago

Can a rational number to a rational power be rational

Aleks [24]

Answer:

it is possible to get something rational.

Step-by-step explanation:

This can't really be explained.

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2 years ago

Rosa says that to find how many tortillas she can fill, she first finds find how many 1/3 cups are in 8 cups. What else must Ros

Kamila [148]

She can divide the 8 cups by the 1/3 cups

Step-by-step explanation:

The next step will be to divide 8 cups by 1/3 cups

This will be:

= 8÷1/3

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= 24

There are 24 1/3cups in 8 cups.

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Keywords : tortillas

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Name a pair of vertical angles.

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