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denis-greek [22]
4 years ago
10

Why is it rare for frames to be completely​ accurate? Choose the correct answer below. A. It is rare for frames to be accurate b

ecause frames are obtained in a way that causes the sample to favor one part of the population over another. B. It is rare for frames to be accurate because individuals that were selected to be in the sample do not always respond to the​ survey, which can create nonresponse bias. C. It is rare for frames to be accurate because frames are obtained​ periodically, whereas populations are constantly changing. D. It is rare for frames to be accurate because large sample sizes used in frames almost always result in​ data-entry errors.
Mathematics
1 answer:
inysia [295]4 years ago
7 0

Answer: C

Step-by-step explanation:

Frames are list of individuals present in a population or group. The major reasons frames are hardly accurate is because of the dynamism in population. Individuals get added and removed periodically so this causes some form of variations in statistically analysing such samples.

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nata0808 [166]

Answer:

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Step-by-step explanation:

8 0
3 years ago
Need help asap with b and c!!! plz help for a cookie :)
Debora [2.8K]
You can think of this question like the photo attached above.

Hi!

I think for b, the answer would be:

You can construct an angle that is one fourth the measure of angle JKL, by dividing angle either angle MKL or JKM in half.
This is because one-fourth is also equal to one quarter (1/4). If you split angle JKL into 4 equal angles, you would have an angle that is one-fourth the measure (original angle) of angle JKL.

I think for c, the answer would be:

You can construct a 15 degree angle from a given 60 degree angle, by dividing the 60 degree angle into 4 equal angles.
This would work, because each of the 4 angles would be 15 degrees.

Hope this helps! Best of luck!



4 0
3 years ago
Out of 27 participants in a track race, 5 are from China, 4 from the U.S.A., 3 each from the U.K. and Russia, and the rest from
son4ous [18]
I think it is 4 out of 5 but i dont know the number to the nearest thousanths 
but i hope this helps
4 0
3 years ago
Walter invests $100,000 in an account that compounds interest continuously and earns 12%. How long will it take for his money to
prohojiy [21]

Answer:

300000= 100000 e^{0.12 t}

We divide both sides by 100000 and we got:

3 = e^{0.12 t}

Now we can apply natural logs on both sides;

ln(3) = 0.12 t

And then the value of t would be:

t = \frac{ln(3)}{0.12}= 9.16 years

And rounded to the nearest tenth would be 9.2 years.

Step-by-step explanation:

For this case since we know that the interest is compounded continuously, then we can use the following formula:

A =P e^{rt}

Where A is the future value, P the present value , r the rate of interest in fraction and t the number of years.

For this case we know that P = 100000 and r =0.12 we want to triplicate this amount and that means A= 300000 and we want to find the value for t.

300000= 100000 e^{0.12 t}

We divide both sides by 100000 and we got:

3 = e^{0.12 t}

Now we can apply natural logs on both sides;

ln(3) = 0.12 t

And then the value of t would be:

t = \frac{ln(3)}{0.12}= 9.16 years

And rounded to the nearest tenth would be 9.2 years.

5 0
3 years ago
What is the solution to this system of linear equations? Y-x=6 y+x=-10
snow_tiger [21]
\left\{\begin{array}{ccc}y-x=6\\y+x=-10\end{array}\right\ \ \ |add\ both\ sides\ of\ the\ equations\\\\2y=-4\ \ \ \ |:2\\y=-2\\\\substite\ the\ value\ of\ y\ to\ second\ equation\\\\-2+x=-10\ \ \ |+2\\x=-8

Answer:\ x=-8\ and\ y=-2

8 0
3 years ago
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