The equation y=2/3x describes the number of calls y a salesperson makes in x minutes. How does y change as x changes?

Mathematics

1 answer:

amid [387]2 years ago

5 0

Y is 2/3 of x because thats how math works

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s2008m [1.1K]

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it's either a or b, but I would go with A

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2 years ago

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Which is greater 0.083 repeating or 0.3 repeating?

alexdok [17]

0.3 repeating is greater.

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liraira [26]

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Scores on the math portion of the SAT are believed to be normally distributed and range from 200 to 800. A researcher from the a

Doss [256]

Using the z-distribution, it is found that she should take a sample of 46 students.

<h3>What is a z-distribution confidence interval?</h3>

The confidence interval is:

$\overline{x} \pm z\frac{\sigma}{\sqrt{n}}$

The margin of error is:

$M = z\frac{\sigma}{\sqrt{n}}$

In which:

$\overline{x}$ is the sample mean.

z is the critical value.

n is the sample size.

$\sigma$ is the standard deviation for the population.

In this problem, we have a 95% confidence level, hence $\alpha = 0.95$ , z is the value of Z that has a p-value of $\frac{1+0.95}{2} = 0.975$ , so the critical value is z = 1.96.

Scores on the math portion of the SAT are believed to be normally distributed and range from 200 to 800, hence, by the Empirical Rule the standard deviation is found as follows:

$6\sigma = 800 - 200$