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Sergio039 [100]
3 years ago
9

A set of twins have agreed to take part in an observational study. Each of the twins will wear a microphone that will record eve

ry interaction that they have for a week. Which choice best describes this situation?
A. Covert and structured
B. Covert and unstructured
C. Overt and structured
D. Overt and unstructured
Mathematics
1 answer:
Ivan3 years ago
7 0

Answer: the answer is overt and structured

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Find the slope from the given points (-5,3) (2,4)
Alecsey [184]

Answer:1/7

(-5,3)= (x1,y1)

(2,4)= (x2,y2)

Slope= \frac{y2-y1}{x2-x1}

         =\frac{4-3}{2-(-5)}

         =\frac{1}{7}

4 0
3 years ago
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What is the percentage of 18/20
labwork [276]
18/20 is 90%

You can use a calculator to divide 18 and 20 and you will get 0.9 which is 90%

Or. simplify by dividing the top and bottom by 2, to get 9/10 which is still 90%

:)
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153 of the 258 high school students surveyed at a local school said they went outside more during school hours as elementary sch
Juli2301 [7.4K]

<u>Answer-</u>

<em>It </em><em>is reasonable</em><em> that the state education department claims the percentage for the entire state is 63%.</em>

<u>Solution-</u>

153 out of the 258 high school students surveyed at a local school said they went outside more during school hours as elementary school students than they do now as high school students.

Here,

x = 153,

n = 258,

Then,

\text{sample proportion}=p=\dfrac{153}{258}=0.5930=59.30\%

And,

\text{Margin Error}=2\times \sqrt{\dfrac{p(1-p)}{n}}

Putting the values,

\text{ME}=2\times \sqrt{\dfrac{(0.5930)(1-0.5930)}{258}}\\\\=2\times \sqrt{\dfrac{(0.5930)(0.407)}{258}}\\\\=2\times \sqrt{\dfrac{0.2414}{208}}\\\\=2\times 0.0341\\\\=0.0682\\\\=6.82\%

The interval would be,

=(59.30-6.82,\ 59.30+6.82)\\\\=(52.48,\ 66.12)

As population proportion p=63% lies in this interval, so it is reasonable.

5 0
4 years ago
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There’s no picture so no one will be able to help you sorry :(
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3 years ago
How many times can 82 go into 401
Aleonysh [2.5K]

Answer:

4.89 times

Step-by-step explanation:

I hope this helps :)

8 0
3 years ago
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