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Anon25 [30]
3 years ago
15

In each of the following scenarios, determine if the data are paired.

Mathematics
1 answer:
zmey [24]3 years ago
5 0

Answer:

1. Can be Paired or Not Paired

2. Paired

3. Not Paired

Step-by-step explanation:

Two sets of observations are paired if each observation in one set has a special correspondence or connection with exactly one observation in the other data set.

1. Can be Paired or Not paired

Reason -

We might look at testing the difference of means using a two sample t-test. However, we may also try running a paired t-test.

But its used in cases where the observations are usually from the same populations at different times or through different sources etc.

Hence can't conclude that it is paired or not paired.

2. Paired

Reason -

Each record is a price of the same item from different stores.

3. Not paired

Reason -

This is again a case of testing the difference of means of two-samples (2 independent samples precisely) that are not paired.

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Write two equivalent expressions to represent the sum of the angles of this triangle.
aleksley [76]

Answer:

  • 5y +2y +2y
  • 9y

Step-by-step explanation:

The sum can be indicated by putting plus signs between the angle values:

  5y +2y +2y

It can also be expressed as the simplified form of this expression:

  9y

6 0
3 years ago
Last one help. Use formulas to find the lateral area and surface area of the given prism. Round your answer to the nearest whole
Fed [463]
The formula for finding the lateral area for a triangular prism is
A_{L} = (a + b + c )h

So put in the values and you get

A_{L} = (12.04 + 9 + 8 )23
A_{L} = 668

The formula for finding the surface area of a triangular prism is
SA = bh + (s1 + s2 + s3)H

So put in all the values and you get

SA = 9(8) + (9 + 8 + 12.04)23
SA = 740

Hope this helps! :)
3 0
2 years ago
<img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B5%20%2B%20n%7D%7B4%7D%20%20%3D%20%20-%201" id="TexFormula1" title=" \frac{5 + n}{
Delvig [45]

Answer:

n=   -9

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Can someone help me with a question!?!?
Len [333]

If the parent graph f(x) = x² is changed to f(x) = 2x², the vertex of the parabola will still remain (0, 0) because whenever the equation of a parabola is in the form y = ax², the vertex will always be (0, 0).

Now if <em>a</em> is a big number, the parabola will become narrower.

So it will stretch vertically and become narrower.

8 0
3 years ago
What is the answer to 3x+x/4=x+3/4
erica [24]

Answer:x = 1

Step-by-step explanation:

3x + x/4 = x + 3/4

Subtract x from each side

2x + x/4 = 3/4

Times each side by 4

The 4 beneath the x cancels out

3/4 x 4 = 3

2x + x = 3

3x = 3

Divide each side by 3

x = 1

5 0
3 years ago
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