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amid [387]
2 years ago
15

A random sample of people is chosen to participate in a survey. For the survey results to be considered valid, which must be tru

e of the random sample?
The sample must be the same size as the population.

The sample must represent the target population.

The sample must be biased.

The sample must be a group separate from the population.
ANSWER BELOW HERE
B - The sample must represent the target population.
Mathematics
2 answers:
cricket20 [7]2 years ago
7 0

Answer:

The sample must represent the target population

Step-by-step explanation:

To figure out the answer to can eliminate the answers that don't make sense.

The question is A random sample of people is chosen to participate in a survey. For the survey results to be considered valid, which must be true of the random sample?

Lets look at our answers-

A: The sample must be the same size as the population.

That does not make sense as the answer because the sample doesn't always have to be the same size as the population. So let's cross that out.

B: The sample must represent the target population.

That Makes the most sense because if you have a survey and your trying to get people opinion the sample must represent the target.

C: The sample must be biased.

This answer also makes a bit sense but not as much as B.

D: The sample must be a group separate from the population.

This is wrong because if your trying to get multiple peoples opinion you don't need a specific or separate group from the population.

So, Our answer is B: The sample must represent the target.

meriva2 years ago
3 0

Answer The sample must represent the target population.

Step-by-step explanation:

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Calculate the average rate of change of the function f(x) = mx + b over the interval 2 ≤ x ≤ 13.
Nesterboy [21]

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m

Step-by-step explanation:

The slope of a line is constant. This means no matter the two points on the line that you use to calculate the slope you will get the same number for the slope. Your equation is in slope-intercept form, y=mx+b where m is slope and b is y-intercept. So your equation is in that exact form with the same use of constant numbers m and b where m is slope and b is y-intercept.

So the answer is m.

However, we could use slope formula = change in y divided by change in x.

Change in y from x=2 to x=13 is [(m(13)+b)-m(2)+b)]=13m+b-2m-b=13m-2m+b-b=11m+0=11m.

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mestny [16]

To find the area of the full shape, we can find the areas of individual smaller shapes and add them together. Lets break this up into a rectangle and a triangle.


The rectangle is easy to calculate as we already have its measurements. The area of a rectangle is h*w=A.

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Next the triangle, and we need to do some logic work with the measurements to find the necessary measurements to take the area.


We know the base of the triangle is some part of 36 feet. We also know from the image that the part of the 36 that is not part of the base of the triangle is 12. Therefore, the base of the triangle is 36 - 12 = 24.


Now we need the height of the triangle. We know the height of the triangle is some part of 39, and the part that is not part of the triangle is 25. Therefore, the height of the triangle is 39 - 25 = 14.


We now have the height and base of the triangle and can find its area. The area of a triangle is 0.5wh=A.

0.5(24)(14)=A

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Finally, we just need to add the two results together to find the total area.

168 + 900 = A

1068 = A


The total area of the shape is 1068.

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