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Montano1993 [528]
3 years ago
8

Identify which of these designs is most appropriate for the given​ experiment: completely randomized​ design, randomized block​d

esign, or matched pairs design.
A drug is designed to treat insomnia. In a clinical trial of the​ drug, amounts of sleep each night are measured before and after subjects have been treated with the drug.
The most appropriate is (randomized block, matched pairs, completly randomized) design.
Mathematics
1 answer:
sasho [114]3 years ago
7 0

Answer:

Matched pairs design

Step-by-step explanation:

Looking at the options;

-It's not a completely randomized design because a randomized design will assign all individuals to a group which in this case it doesn't.

- It's not a randomized block design because randomized block design will group the subjects in question into 2 or more blocks which have a common characteristic and will then randomly assign subjects in each of the blocks.

-It's a matched pair because every individual/subject undergoes measurements both before and after being treated with the drugs.

Thus, the correct option is matched pairs design.

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The product of two decimals less than 1is less than either of the factors
poizon [28]
This is true for any decimals below 1:
If you multiply a number by something greater than 1, it increases
If you multiply a number by 1, it stays the same
If you multiply a number by something less than 1, it decreases
4 0
3 years ago
If the triangle on the grid below is translated by using the rule (x, y) right-arrow (x minus 2, y + 2), what will be the coordi
lara31 [8.8K]

Answer:

Coordinates of A prime will be (-4,0).

Step-by-step explanation:

Given:

ABC is a triangle on a grid with its coordinates in (x,y).

The coordinates are as follows:

A = (-2,-2)

B = (-2,-4)

C = (2,-4)

According to the question.

The points are translated by (x-2,y+2) rule.

We have to find A prime i.e A' the coordinate of A after it is translated.

In translation we move the coordinates without rotating and resizing.

So

Point A after translation will be called A'.

⇒ A = (-2,-2)

Subtracting 2 with the 'x' value and adding 2 with the 'y' value coordinate.

⇒ A' = (-2-2,-2+2)

⇒ A '= (-4,0)

So the value of A prime after translating it by (x-2,y+2) is (-4,0).

7 0
3 years ago
Read 2 more answers
Robin can mow a lawn in 3 hours, while Brady can mow the same lawn in 4 hours. How many hours would it take for them to mow the
BaLLatris [955]
The answer is <span>twelve sevenths (12/7)
</span>
x - the job<span>
t - time to do the job x

</span><span>Robin can mow a lawn in 3 hours: x/3 * t
</span><span>Brady can mow the same lawn in 4 hours: x/4 * t

</span><span>If they work together, the total work will be the sum of their speeds:
</span>x = x/3 * t + x/4 * t = (x/3 + x/4)*t = (4x/12 + 3x/12) * t = 7x/12 * t

x = 7x/12 * t

Divide both sides by x:
x/x = 7x/12 * t/x
1 = 7/12 t
t = 1 : 7/12
t = 12/7
5 0
2 years ago
Please help i’ll give brainliest if you give a correct answer
zysi [14]

Answer:

a

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
Write the slope-intercept form of the equation of the line described.
Svetach [21]

Answer:

1) y = 2/3x - 2

2) y = -1/2x + 3

Step-by-step explanation:

1) Parallel lines have the same slopes. Write it in standard form (y = mx + c), then substitute the values of the coordinates into the equation.

y = 2/3x + c

0 = 2/3(3) + c

0 = 2 + c

0 - 2 = c

- 2 = c

Therefore, the slope-intercept form for the first part is y = 2/3x - 2.

2) Parallel lines have the same slopes. Write it in standard form (y = mx + c), then substitute the values of the coordinates into the equation.

y = -1/2x + c

1 = -1/2(4) + c

1 = -2 + c

1 + 2 = c

3 = c

Therefore, the slope-intercept form for the second part is y = -1/2x + 3.

5 0
2 years ago
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