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liberstina [14]
2 years ago
11

Page(s) 33–34 How Do Psychologists Conduct Research? A psychologist designs an experiment on the effects of exam preparation str

ategy on long-term memory. She randomly assigns college students to one of three groups in the experiment. Group 1 studies using visual information only. Group 2 studies using auditory information only. Group 3 does not study at all. The students follow the instructions for how they must study for four days to prepare for a 100-question multiple-choice exam. They all study the same chapter in the textbook and all take the same exam. Exam scores are then recorded. Categorize each item from the experiment as a dependent variable, an independent variable, or neither.
Mathematics
1 answer:
Marrrta [24]2 years ago
4 0

Answer:

1) The dependent variable is;

The recorded exam scores of the student

2) The independent variable items in the experiment are;

a) The method of study;

i) Through visual information only

ii) Using auditory information only

iii) Not studying at all

b) The duration of study

Four days

c) The number of questions in the exam

100-questions

Step-by-step explanation:

Dependent Variable

The dependent variable is the measured result of the experiment which are the values that change due to a change in the treatment applied in the experiment

The dependent variable is the output of the function of the experiment from an varied inputs to the experiment which is the independent variable

Independent Variable

The independent variable are the variable taken as the cause of the desired effect which is observed measured as the dependent variable

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2) Calculate the surface<br> area of the cylinder:<br> 5 cm
AVprozaik [17]

Answer:

28π cm²

Step-by-step explanation:

The surface of a cylinder is given by the formula:

  • 2πrh + 2πr²

where r is the radius of the base, and h is the height.

Using the image, we can find that the radius of the cylinder would be 2 cm, and the height would be 5 cm.

Now, to find the surface area of the cylinder, we would have to plug in 2 for r (the radius of the base) and 5 for h (the height of the cylinder) into the formula for the surface area of a cylinder.

Now we plug in 2 for r and 5 for h for the equation for the surface area of a cylinder:

2π(2)(5) + 2π(2)² = 20π + 2π(4) = 20π + 8π = 28π

Remember, the radius and the height are given to us in cm, and w are solving for surface area, so the answer should be in cm² (square centimeters).

The surface area of the cylinder would be 28π cm².

28π cm² would be an exact answer. For the approximate answer, plug in 3.14 (most math classes use 3.14 to approximate π) for π.

I hope you find this helpful. :)

5 0
3 years ago
Solve for x: 10 - 2x = -5x - 5<br> (1) X = -5<br> (3) X= 4<br> (2) x 15<br> (4)x= -15
Alekssandra [29.7K]
10 - 2x = -5x -5
+2x +2x
10 = -3x -5
+5 +5
15= -3x
X= -5
7 0
3 years ago
Read 2 more answers
Help please like hurry!!
adelina 88 [10]
The answer is a 36
This is because if you take the area of one of the three triangles that make up the trapezoid you do 1/2 base times height and get 12 and you add all three together thus getting 36 square inches
5 0
3 years ago
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Which statement is true regarding the diagram of circle P? The sum of y and z must be 2x. The sum of y and z must be One-halfx.
Klio2033 [76]

Answer:

The difference of z and y must be 2x.

5 0
2 years ago
Solve: 1/4x - 5 = 3/4x - 12
ivanzaharov [21]
The answer to the math problem it X=14 hope this helps
7 0
3 years ago
Read 2 more answers
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