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2 years ago

Help plz!! No links.

Mathematics

2 answers:

BigorU [14]2 years ago

7 0

Answer:

Step-by-step explanation:

Here is why.

The angle going down is 10 meters long.

Therefore it would be ten.

Any questions?

Nataly [62]2 years ago

6 0

Answer:

Step-by-step explanation: i just did it in school a few days ago gg

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Drag the number to each box to match the expression on the left to its estimate

Burka [1]

Answer:

1 - 1/2

2 - 1

3 - 0

Step-by-step explanation:

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2 years ago

Suppose the true proportion of students at a college who study abroad is 0.25. I select a random sample of 40 students from the

Julli [10]

Answer:

$\mu_{\hat p} = 0.25$

$\sigma_{\hat p}= \sqrt{\frac{0.25*(1-0.25)}{40}}= 0.0685$

$z = \frac{0.2-0.25}{0.0685}= -0.730$

And we can use the normal standard distribution or excel to find this probability and we got:

$P(\hat p$

Step-by-step explanation:

We define the parameter as the proportion of students at a college who study abroad and this value is known $p =0.25$ , we select a sample size of n =40 and we are interested in the probability associated to the sample proportion, but we know that the distirbution for the sample proportion is given by:

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

And the paramters for this case are:

$\mu_{\hat p} = 0.25$

$\sigma_{\hat p}= \sqrt{\frac{0.25*(1-0.25)}{40}}= 0.0685$

We want to find the following probability:

$P(\hat p< 0.2)$

For this case since we know the distribution for the sample proportion we can use the z score formula given by:

$z = \frac{\hat p -\mu_{\hat p}}{\sigma_{\hat p}}$

Replacing the info given we got:

$z = \frac{0.2-0.25}{0.0685}= -0.730$

And we can use the normal standard distribution or excel to find this probability and we got:

$P(\hat p$

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3 years ago

Please help me with this problem i tried

mezya [45]

Answer:

I think the answer is 1280

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2 years ago

Read 2 more answers

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mylen [45]

Answer:

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Step-by-step explanation:

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2 years ago

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C I hoC. I think I hope this helps you!

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2 years ago