Answer: Choice D
They should be blocked by pain resistance so the subjects are as similar as possible.
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Explanation:
The process of blocking in statistics is where we group up people in blocks, and each block is determined by a characteristic of some sort. In this case, we're grouping people up by pain resistance level. Those very resistant to pain will be in one group, while those who easily feel pain will be in another block, and so on. It might be effective to have a pain scale and sort people by that.
Blocking is done so that we eliminate unwanted variability. We are testing the effectiveness of the itching cream, so all we care about is if the itch reduces or not. We aren't worried about the levels of pain. However, it says that "Previous studies have shown the effects of treatment may vary based on a subject's pain resistance". So we group up the people by pain tolerance to help eliminate the variability of pain tolerance levels.
This is why choice D is the final answer.
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Extra info:
Choice A is false because a person's name doesn't have anything to do with if the treatment works or not.Choice B is false because we weren't given any info to indicate it being true. It may be true, but we simply don't have enough info to confirm it. Choice C is false for similar reasons as choice B.Answer:D
Step-by-step explanation:
This is due to the question explicitly stating how the previous studies have shown the effects of treatment may vary based on a subjects pain resistance. This leads to the only option that relates to the study's background, D
Can somebody help me with this. Will Mark brainliest.
Answer:
The answer is 36 I believe
Step-by-step explanation:
Answer:
Step-by-step explanation:
sin(x) = 5.9/8.1
x = arcsin(5.9/8.1) ≅ 47°
Which equation could be used to find the missing value of x?
Answer:
d
Step-by-step explanation:
A store sells an item for $35 after a 25% markup. What is the price the store paid?
$8.75
$28.00
$43.75
$140.00
Answer:
The store paid $28.00
Step-by-step explanation:
28 times .25(25%) is 7 and 28+7=35
Madelyn has x nickels and y dimes, having a maximum of 15 coins worth no
less than $1 combined. At least 2 of the coins are nickels and at least 9 of the
coins are dimes. Solve this system of inequalities graphically and determine
one possible solution.
9514 1404 393
Answer:
2 nickels, 9 dimes
Step-by-step explanation:
When there are a number of overlapping shaded areas on the graph, I find it convenient to use the reverse of the inequalities. That makes the unshaded area the solution space. Here, the vertices of the triangular solution space are ...
(2, 9), (2, 13), (6, 9)
Any of the grid points within (or on) this triangle is a possible solution. One of them is (2, 9) corresponding to 2 nickels and 9 dimes.
__
Three solutions are shown:
(x, y) = (2, 9), (3, 10), (4, 11)
Find the volume: 5ft 5ft 8ft 3ft
Answer:
120ft
Step-by-step explanation:
8 x 3 x 5
determine the missing angle
Answer:
46°
Step-by-step explanation:
These angles are same-side supplementary, therefore they add up to 180°.
180 - 134 = 46°.
1
Select all of the true statements about the two triangles shown below.
Answer:
Options B, C, D, F are correct answers
Step-by-step explanation:
Hope it helps you in your learning process.
1. Does this equation represent growth or decay?
A (t) = 800(1.21)
Answer:Decay
Step-by-step explanation: because of perenthesis
a sneaker with a mark price of $1000 was offered at a discount of 8% for paying cash if someone paid cash for the sneakers how much did they pay
Answer:
920
Step-by-step explanation:
8% of 1000 is 80
1000 - 80 = 920
How do these U.S. customary units of liquid volume compare? Drag and drop the volume measures so they are in order from smallest to largest.
cup
pint
quart
Answer:
it should go cup pint quart.
I really need help please
Answer:
b= 64 m
Step-by-step explanation:
[tex]b^{2}[/tex] + [tex]48^{2}[/tex] = [tex]80^{2}[/tex]
[tex]b^{2}[/tex] = [tex]80^{2}[/tex] - [tex]48^{2}[/tex]
[tex]b[/tex] = [tex]\sqrt{80^{2}-48^{2} }[/tex]
= [tex]64[/tex] m
Answer:
is it math
Step-by-step explanation:
omg I really really really hate math
Find the value of x.
Answer:
16
Step-by-step explanation:
PLEASE HELP ME ANSWER THIS PLEASE PLEASE PLEASE
Answer:
see explanation
Step-by-step explanation:
(a)
The turning point is the vertex of the graph
The coordinates are (2, - 4 )
(b)
The zeros are the values of x where the graph crosses the x- axis
The graph crosses the x- axis at
x = - 1, x = 5 ← zeros
(- 1, 0 ), (5, 0 ) in coordinate form
The lines 2x=ky+2 and (k+1)x=6y-3 have same gradient. Find possible values of k
I need the answers ASAP please!
Answer:
k = 3 or k = -4
(Anyone can correct me if I'm wrong)
Step-by-step explanation:
[tex]2x=ky+2\to\ eq1\\(k+1)x=6y-3\to\ eq2\\$Change to this form: $y=mx+c\\ky=2x-2\\y=\frac{2x-2}{k}\\$gradient of eq1: $\frac{2}{k}\\6y=(k+1)x+3\\y=\frac{(k+1)x+3}{6}\\y=\frac{k+1}{6} x+\frac{3}{6}\\y= \frac{k+1}{6} x+\frac{1}{2}\\$gradient of eq1: $\frac{k+1}{6}\\$Since gradient, m, is the same for both lines,$\\\frac{2}{k}=\frac{k+1}{6}\\12=k^{2}+k\\k^{2}+k-12=0\\(k-3)(k+4)=0\\k=3 $ or $ k=-4[/tex]
Identify 3 characteristics of the parabola = −2^2 − 3 + 5.
Answer:
−2
Step-by-step explanation:
−22−3+5
=−4−3+5
=−7+5
=−2
PLS BRAINLIEST
Simplify each expression. Show all work from credit.
Plz help me
Answer:
1. = 1 because any numbers to the power 0 is one
2. = 1/64
3.= b^15 base same power added up
what is the answer to 2x - 20°
Answer:
so 10
Step-by-step explanation:
2−20
Grouping
1
Common factor
2−20
2(−10)
Solution
2(−10)
write 20x20 using an exponent
Step-by-step explanation:
20^2 because you are multiplying 20 two times
20×20=20², is the exponent form.
What is multiplication?In mathematics, multiplication is a method of finding the product of two or more numbers. It is one of the basic arithmetic operations, that we use in everyday life.
Here, we have,
20×20
=400
=20²
Hence, 20×20=20², is the exponent form.
To learn more on multiplication click:
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1/4 equals Z /20 what does z equal
Answer:
5
Step-by-step explanation:
Solve the equation 5.5(x-3)=17+10.5 in systems of equations. How can you find your solution?
Answer:
x= 8
Step-by-step explanation:
5.5(x-3)=17+10.5
5.5x - 16.5= 27.5
5.5x= 44
x= 8
Estimate how many times larger 6.1 x 1
07
is than 2.1 x 1
0−4
.
Estimate how many times larger 1.9 x 1
0−8
is than 4.2 x 1
0−13
i need help.
.
if triangle def is similar to triangle jkl find kl
Answer:
KL=45
Step-by-step explanation:
Which graph represents the function g(x) = 3/(x+2) -4?
Answer:
x=-2, y=-4
Step-by-step explanation:I took the test on k12
The required graph of the given function g(x) = 3/(x+2) -4 is given in the image attached below,
Given that,
The graph for the function g(x) = 3/(x +2) - 4 is to be determined.
The graph is a demonstration of curves that gives the relationship between the x and y-axis.
Here,
g(x) = 3/(x+2) - 4
Since the function has an inverse operator as 1 / (x + 2) the graph for the given function shown in the graph,
Thus, the required graph of the given function g(x) = 3/(x+2) -4 is given in the image attached below,
Learn more about graphs here:
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What is the slope of the line in this graph?
Answer:
90% sure it's 5/7
Step-by-step explanation:
YO SOMEBODY HELP PLS IM STUCK
Answer:
X is less than or equal to -3
Hope that answers your question
What is the value of y?
03
04
05
06
Answer:
03
Step-by-step explanation:
Subtract 4, divide by 2, then get 3
The value of y from the figure is 3.
What is Rectangle?An enclosed 2-D shape called a rectangle has four sides, four corners, and four right angles (90°).
A rectangle has equal and parallel opposite sides.
A rectangle has two dimensions—length and width—because it is a two-dimensional form. The rectangle's longer side is its length, while its shorter side is its breadth.
We have a figure of rectangle whose length = 10 + 2x or 18
and width = 10 or 2y+ 4
As, we know the opposite sides of rectangle are equal.
So, 10+ 2x = 18
2x = 8
x= 4
and, 10 = 2y+ 4
2y= 6
y= 3
So, the value of y is 3.
Learn more about Rectangle here:
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x^2+3=7x
Quadratic Formula
Answer:
=
7
±
3
7
√
2
Step-by-step explanation:
Answer:
=7±√37/2
Step-by-step explanation:
-2a - 7 = -11 (worth 25 points}
Answer:
A=2
Step-by-step explanation:
URGENT !!!!!!!!! Please answer correctly !!!!! Will be marking Brianliest !!!!!!!!!!!!!!!!
Answer:
m=-1/2
Step-by-step explanation:
(x1,y1)=(9,4)
(x2,y2)=(3,7)
m= y2−y1 / x2−x1
= 7−4 / 3−9
= 3 / −6
m= -1/2
Brainliest
Answer:
(6,5.5)
Step-by-step explanation:
(9+3)/2,4+7/2
(12/2),(11/2)
(6,5.5)
Please solve all these ASAP:))))))))
Step-by-step explanation: