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Hoochie [10]
3 years ago
12

A researcher investigates whether there is a relationship between hours of sleep and memory for photographs. The researcher assi

gned 40 participants to sleep in the laboratory and woke 20 of the participants after 4 hours of sleep and the other 20 after 8 hours of sleep. After they are awakened, each participant is asked to study 21 photographs and then recall as many details from the photographs as possible. In this study, what is 8 hours of sleep?
Mathematics
2 answers:
ehidna [41]3 years ago
8 0

Answer:

It is the experimental condition.

Step-by-step explanation:

In the experiment given in the question, the amount of sleep is the independent variable and the number of photographs they remember is the dependent variable because it depends on the amount of sleep.

The 8 hours of sleep, which creates the difference in the experiment between the control group and the test group, is the experimental condition.

The experimental condition is the variable that is changed to let the researcher observe the effects on the dependent variable.

I hope this answer helps.

nignag [31]3 years ago
3 0

Answer:

8 hours of sleep is an independent variable and is the normal parameter, the best time sleep consider.

Step-by-step explanation:

In this case, we are talking about correlational research, where the researcher wants to find out if there is a relationship between hours of sleep and memory for photographs. The hours of sleep are used to compare whether a person have this right and healthy amount of sleep or not. It is an independent variable which will modify, or not, the memory a person has to recall the photographs.

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3 years ago
a square piece of cheese covers 8 square inches of a plate. what is the approximate length of one side of the piece of cheese? (
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3 years ago
Read 2 more answers
Solve For Each Variable.
bixtya [17]

The first equation given 6=1-2n+5

We have to add 1 and 5 to the right side first. We will get,

6= 6 - 2n

To get rid of 6 from the right side we have to subtract 6 from both sides.

6-6 = 6-6-2n

6-6 = -2n

0=-2n

To find n we have to move -2 to the other side by dividing both side by -2.

0/-2 = -2n/-2

0= n

n=0

So we have got the required answer for the first question.

The solution is n = 0.

The second equation given,

8x-2 = -9+7x

First we have to move 7x to the left side by subtracting it from both sides.

8x-7x-2 = -9+7x-7x

8x-7x-2 = -9

x-2 = -9

Now we have to move -2 to the right side by adding 2 to both sides.

x-2+2 = -9+2

x = -9+2

x = -7

We have got the required answer for the second question.

The solution is x = -7.

The third equation given,

-8 = -(x+4)

We have to get rid of that negative sign from both sides. As we have negative sign to both sides we can cancel it out. We will get,

8=x+4

Now we have to move 4 to left side by subtracting it from both sides.

8-4 = x+4-4

8-4 = x

4=x

x = 4

So we have got the required answer .

The solution is x = 4.

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Can someone please help me with this?
vovikov84 [41]
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