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yawa3891 [41]
4 years ago
6

Suppose you are interested in how participants behave in different color conditions. You select 30 participants and assign them

to one of three rooms. The rooms differ only with respect to the color of the walls. One room is white, one is pale blue, and a third is bright red. Each participant is served a meal of a hamburger and french fries, and you then measure how long it takes them to finish eating. What would be the independent variable in this study
Mathematics
1 answer:
ArbitrLikvidat [17]4 years ago
6 0

The answer is the color of the room

Explanation:

In this study, the color of the room is the factor or variable that is modified by the researcher. Also, it is expected the color of the room affects participants' behavior but not the opposite. This shows the color of the room is an independent variable because this factor is not affected by other variables, and it modifies the dependent variable (behavior). Moreover, in studies, the independent variable is always the one that is changed by the researcher.

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Find the area and the circumference of a circle with radius 9 ft.
Nitella [24]

Answers:

Area = 254.34 square feet

Circumference = 56.52 feet

=========================================================

Work Shown:

Area = pi*(radius)^2

A = pi*r^2

A = 3.14*9^2

A = 254.34 square feet

----------------

Circumference = 2*pi*(radius)

C = 2*pi*r

C = 2*3.14*9

C = 56.52 feet

The two results are approximate since pi = 3.14 is approximate.

5 0
3 years ago
Read 2 more answers
Solve for x<br> x - 2/3 = 3
seropon [69]

Answer:

x = 11/3

Step-by-step explanation:

x - 2/3 = 3

³⁾x = ³⁾3 + 2/3

3x = 9 + 2

3x = 11

x = 11/3

3 0
4 years ago
Read 2 more answers
John has two colored varieties of water bottles: white water bottles and black water bottles. The total number of water bottles
mixas84 [53]

Answer:

15 black water bottles

Step-by-step explanation:

let w represent white water bottles, and let b represent black water bottles.

set up a system of equations:

w+b=20

w+2b=35

(the top equation shows that the number of white water bottles he sold and the number of black water bottles he sold equals to 20, since it says that the total number of water bottles is 20. the bottom equation shows that white water bottles cost $1, and black water bottles cost $2, and that the total amount of money he got from selling them is $35).

in the top equation, isolate w:

w+b=20

w=20-b

now we do substitution. in the bottom equation, substitute 20-b for w:

w+2b=35

20-b+2b=35

then, solve:

b+20=35

b=15

this means that he sold 15 black water bottles.

4 0
3 years ago
Solve for x.<br> -(-2-5x) + (-2) = 18<br> x= -90<br> x=-18/5<br> 2 = 18/5<br> x= 90
mart [117]

Answer:

x=\frac{18}{5}

Step-by-step explanation:

-\left(-2-5x\right)+\left(-2\right)=18

<u>Add 2 to both sides:</u>

-\left(-2-5x\right)-2+2=18+2

-\left(-2-5x\right)=20

<u>Divide both sides by -1:</u>

\frac{-\left(-2-5x\right)}{-1}=\frac{20}{-1}

-2-5x=-20

<u>Add 2 to both sides:</u>

-2-5x+2=-20+2

-5x=-18

<u>Divide both sides by -5:</u>

\frac{-5x}{-5}=\frac{-18}{-5}

x=\frac{18}{5}

___________________________

<u>OAmalOHopeO</u>

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3 years ago
Plz plz help test due soon
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Answer:

22

Step-by-step explanation:

8 0
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