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3 years ago

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1 answer:

Aleonysh [2.5K]3 years ago

3 0

Answer:

ok

Explanation:

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Which of the following is a possible long-term consequence of two organisms occupying the same niche? a. Local extinction b. Coo

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Answer:

Niche refers to the role of the microorganism or a living thing in an ecosystem. When two organisms occupying the same niche, the possible long-term consequence isA. local extinction. This is because the relationship is competition which can outlast the other. Eventually, when the environment is changed, the organisms adapt too which erases the original attributes.

Explanation:

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3 years ago

(3y-20)<br> (6x+7)<br> (4x-7)<br> What is the value of

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3 years ago

A study suggests that about 80\%80%80, percent of undergraduate students are working at a job. Researchers plan to do a follow-u

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Using the z-distribution, it is found that the smallest sample size required to obtain the desired margin of error is of 4330.

<h3>What is a confidence interval of proportions?</h3>

A confidence interval of proportions is given by:

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which:

$\pi$ is the sample proportion.

z is the critical value.

n is the sample size.

The margin of error is given by:

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

In this problem:

The estimate of the proportion is of $\pi = 0.8$ .

The desired margin of error is of M = 0.01.

90% confidence level, hence $\alpha = 0.9$ , z is the value of Z that has a p-value of $\frac{1+0.9}{2} = 0.95$ , so $z = 1.645$ .

Then, we solve for n to find the minimum sample size.

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

$0.01 = 1.645\sqrt{\frac{0.8(0.2)}{n}}$

$0.01\sqrt{n} = 1.645\sqrt{0.8(0.2)}$

$\sqrt{n} = \frac{1.645\sqrt{0.8(0.2)}}{0.01}$

$(\sqrt{n})^2 = \left(\frac{1.645\sqrt{0.8(0.2)}}{0.01}\right)^2$

$n = 4329.6$

Rounding up, the smallest sample size required to obtain the desired margin of error is of 4330.

To learn more about the z-distribution, you can take a look at brainly.com/question/12517818

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2 years ago

According to the table, which function grows the fastest?

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Answer:

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2 years ago

Solutions of systems of equations:

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Answer:

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Explanation:

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3 years ago