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m_a_m_a [10]
3 years ago
6

Do children prefer purple juice or yellow juice? Two different supplements, which have no effect on taste, are used on identical

juice to produce purple juice or yellow juice. Volunteer children are randomly assigned to either purple juice or yellow juice, and they are asked to rate the juice on a scale from 1 point to 10 points. Is blinding demonstrated in the experiment? No, because the volunteers do not know the color juice they are getting Yes, by having the experimenter in a separate room pick one of the two containers at random and having a juice pulled from that container remotely Yes, by having the statistician analyzing the results not know which volunteer sampled which juice Yes, by having the volunteers wear a blindfold while drinking the juice out of the container, so that they don't know the color juice they are tasting No, because the volunteers know whether they are drinking purple juice or yellow juice
Mathematics
2 answers:
Archy [21]3 years ago
8 0

Answer:

Yes, by having the experimenter in a separate room pick one of the two containers at random and having a juice pulled from that container remotely

Step-by-step explanation:

hope this helped

QveST [7]3 years ago
8 0

f.  No, because the volunteers know whether they are drinking purple juice or yellow juice

I took the quiz and got it right :)

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Find the markup and the selling price of the following item. Round answers to the nearest cent. A chemistry set costing $27.50,
postnew [5]

Let x be marked up price. We have been given that a chemistry set costing $27.50, marked up 32% on cost.

x=27.50\times\frac{32}{100}

x=27.50\times.32

x=8.8

Therefore, mark up price is $8.80.  

Since we know that selling price of any item equals the sum of cost and mark-up price of the item.

Let us find selling price of our chemistry set.  

\text{Selling price of chemistry set}=27.50+8.8

\text{Selling price of chemistry set}=36.30      

Therefore, the selling price of the chemistry set is $ 36.30.

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3 years ago
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3 years ago
What is the slope of the line represented by the equation y + 3 = -4(X-5)?
N76 [4]

Answer:

y-5=-3(x-17)

y-5=-3x+51  

y=-3x+46

compare with equation

y=mx+c

slope = -3

Step-by-step explanation:

4 0
3 years ago
What is the slope of this line?
Brums [2.3K]

Answer:

slope=\frac{1}{4}

Step-by-step explanation:

The slope of a line can be seen as:

\frac{rise}{run}

Rise over run is the change in the y values over the change in x values. For example, in this graph, you would start on one of the points given. From there, you would move up first. After moving up a certain number of spaces, you would move to the side until you reach the other point.

In the graph, you would move up until you are in line with one of the other points. Starting at (-4,5), move up one space, then to the left 4 spaces to reach the point (0,6). Using the spaces moved in the rise over run:

\frac{1}{4} =\frac{rise}{run}=slope

Therefore, the slope is \frac{1}{4}.

This is true for any two points on the line.

:Done

*When you move up, the number will be positive (\frac{+y}{x} ). If you move down, the number will be negative (\frac{-y}{x} ). If you move left, the number will be positive (\frac{y}{+x}). If you move right, the number will be negative (\frac{y}{-x} ). Keep this in mind. It is very important.

**Always <em>move along the y-axis first</em>, then move along the x-axis. If you do it the other way, the slope will be wrong.

6 0
3 years ago
A 24-foot ladder rests against a house near a second story window 20 feet from the ground. Assume that the ladder and the house
Sauron [17]
The ladder, leaning against the building, forms a right triangle with height "a" being the distance from the ground to the window, and hypotenuse "c" being the length of the ladder.

Because it's a right triangle, we can use trigonometric ratios to find the angles we're missing.

For part A), to solve for the angle between the base of the ladder and the ground, you'll want to use sine, because we know the lengths of the opposite side and the hypotenuse.

Sin(x) = a/c , solve for angle x in degrees or radians.

For part B), finding the angle between the top of the ladder and the building, remember that the sum of the angles in a triangle is 180 degrees, or pi radians, depending on which unit your teacher prefers.

Assuming degrees, we can say that angle y = 180-90-x. You are simply subtracting the two known angles to find the third.

For part C) use the Pythagorean theorem. You're looking for the length of the base, "b". Recall:

a^2 + b^2 = c^2

Plug in the known values, and solve for b.
7 0
3 years ago
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