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2 years ago

I been help answering this question and a few more

Mathematics

1 answer:

Anon25 [30]2 years ago

5 0

The answer is D 245 because the full arc of a circle.is 360. so subtract 115 from 360.

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2. What is the distance between the points M(-8,11) and N(3,7)?

ivolga24 [154]

Answer:

I'm not sure I feel like it's A

Step-by-step explanation:

-8 is 11 units away from 3 but I do not know where the 7 came from for answer A.

If I were you I would not trust my answer

6 0

2 years ago

Stephanie can type around 70 words per minute. She has less than a week to type her final research paper. If the paper has to be

svetlana [45]

350*15 is 5250. That is the total words needed to reach her assignment paper goal. Since there are 60 minutes in an hour we would need to figure out how many words she can type per hour. 60*70 is 4200. Then we divide 5250 by 4200. We get 1.25. Soooo our final answer would be 1 hour and 15 minutes need to be set aside to type her assignment. I really hope this is correct it makes sense to me. If not i am truly sorry.

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2 years ago

On this map, Oxford street is perpendicular to blank , and Rosewood Street is perpendicular to blank, assume that the street int

spayn [35]

left angle because it turns to oxford

7 0

2 years ago

Create an equation that represents the rainforest

iragen [17]

Rain+Rain=thunder sunshine+rain=cloudy

6 0

1 year ago

The general form of an interval estimate of a population mean or population proportion is the _____ plus and minus the _____. le

vodomira [7]

Answer:

The confidence interval for the mean is given by the following formula:

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

Where :

$\hat p$ represent the point of estimate

And $ME = z_{\alpha/2}\sqrt{\frac{\hat p (1-\hat p)}{n}}$ represent the margin of error

For this reason the confidence interval is the point of estimates plus/minus the margin of error

D.) point estimate, margin of error

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The population proportion have the following distribution

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

Solution to the problem

The confidence interval for the mean is given by the following formula:

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

Where :

$\hat p$ represent the point of estimate

And $ME = z_{\alpha/2}\sqrt{\frac{\hat p (1-\hat p)}{n}}$ represent the margin of error

For this reason the confidence interval is the point of estimates plus/minus the margin of error

D.) point estimate, margin of error

4 0

2 years ago