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3 years ago

Which point represents the approximate location of V240?

Mathematics

1 answer:

velikii [3]3 years ago

8 0

Answer:

Step-by-step explanation:

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How can you use a table of data to write and graph a linear relationship?

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Answer:

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Step-by-step explanation:

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3 years ago

We are studying the proportion of cities that have private garbage collector. We want a maximum error of 0.10 and a 95% confiden

True [87]

Answer:

The minimum number of cities we need to contact is 96.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence interval $1-\alpha$ , we have the following confidence interval of proportions.

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

In which

Z is the zscore that has a pvalue of $1 - \frac{\alpha}{2}$ .

The margin of error is:

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

95% confidence interval

So $\alpha = 0.05$ , z is the value of Z that has a pvalue of $1 - \frac{0.05}{2} = 0.975$ , so $Z = 1.96$ .

In this problem, we have that:

$p = 0.5, M = 0.1$

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

$0.1 = 1.96*\sqrt{\frac{0.5*0.5}{n}}$

$0.1\sqrt{n} = 0.98$

$\sqrt{n} = 9.8$

$(\sqrt{n})^{2} = (9.8)^{2}$

$n = 96$

The minimum number of cities we need to contact is 96.

8 0

3 years ago

a recipe for 4 servings of mashed potatoes calls for 1 1/3 cups of potato flakes and 1 cup of boiling water. if james wants to m

ElenaW [278]

Potato Flakes: 2 cups
Boiling Water: 1 1/2 cups

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4 years ago

What is the vertex on a<br> right angle

Pachacha [2.7K]

The vertex would be the point on the right angle like the tip of the right angle

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3 years ago

What is 4/15 divided by 2/3?

BaLLatris [955]

Answer: 0.4 or 2/5

Hope it helps!

5 0

3 years ago