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3 years ago

HELP PLS HELP DUE IN 5 MINUTES

Mathematics

2 answers:

NNADVOKAT [17]3 years ago

8 0

6.5 Miles apart
Use the Pythagorean Theory

Oduvanchick [21]3 years ago

7 0

6.5 is the answer I think if you use Pathogen theorem

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Maksim231197 [3]

This would be ELA 1 or 2.....

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3 years ago

If there are 6 hours in a school day, 5 school days in a week, 4 school weeks in a month and 9 months in a school year, how many

tino4ka555 [31]

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1080

Step-by-step explanation:

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3 years ago

If these two shapes are similar, what is the measure of the missing length g?

Sophie [7]

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3 years ago

A public health official is planning for the supplyof influenza vaccine needed for the upcoming flu season. She wants to estimat

Marizza181 [45]

Answer:

$n=\frac{0.5(1-0.5)}{(\frac{0.04}{1.64})^2}=420.25$

And rounded up we have that n=421

Step-by-step explanation:

We know that the sample proportion have the following distribution:

$\hat p \sim N(p,\sqrt{\frac{p(1-p)}{n}})$

In order to find the critical value we need to take in count that we are finding the interval for a proportion, so on this case we need to use the z distribution. Since our interval is at 90% of confidence, our significance level would be given by $\alpha=1-0.90=0.1$ and $\alpha/2 =0.05$ . And the critical value would be given by:

$z_{\alpha/2}=-1.64, z_{1-\alpha/2}=1.64$

The margin of error for the proportion interval is given by this formula:

$ME=z_{\alpha/2}\sqrt{\frac{\hat p (1-\hat p)}{n}}$ (a)

And on this case we have that $ME =\pm 0.04$ and we are interested in order to find the value of n, if we solve n from equation (a) we got:

$n=\frac{\hat p (1-\hat p)}{(\frac{ME}{z})^2}$ (b)

We assume that a prior estimation for p would be $\hat p =0.5$ since we don't have any other info provided. And replacing into equation (b) the values from part a we got:

$n=\frac{0.5(1-0.5)}{(\frac{0.04}{1.64})^2}=420.25$

And rounded up we have that n=421

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3 years ago

Help!!!

Arlecino [84]

The answer is 30. 5/10 is equal to 15/30

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3 years ago