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Darina [25.2K]
3 years ago
12

Professor Izadi is interested in determining the association between sleep and cognitive performance. He surveyed his students a

bout the number of hours they slept the night before an exam and then correlated these scores with their test grades. He found a .81 correlation between these two variables. What does this result mean?
Social Studies
1 answer:
I am Lyosha [343]3 years ago
5 0

Answer:

There is a high positive correlation between sleep and exam performance

Explanation:

Correlation studies the degree of association between two variables. A correlation coefficient of 0.5 to 1 is regarded as a strong correlation, that is an increase in one variable will result in an increase in the other variable. A correlation coefficient that lies between 0.3 to 0.49 is regarded as moderately correlated while a value of 0 means that there is no correlation.

Thus, the result of this study shows that an increase in sleeping time will result in better exam performance.

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Derrick thinks his grandfather is boring when he tells stories about being in the vietnam war. derrick doesn't want to be rude,
myrzilka [38]
The answer is pseudo listening. His grandfather was hurt because Derrick is pretending that he listens to his stories but in fact, Derrick finds these so "boring". Derrick does not want to hurt his grandfather that is why he acts as if he is really listening. Pseudo-listening is the term when an individual partially or totally ignores the speaker but not act rude to avoid hurting his feelings.
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4 years ago
What what has been the impact of the universal Declaration of Human Rights
Andrei [34K]

c, it has been formally adopted by each member of the United Nations becoming a global reality

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3 years ago
What event caused Great Britain to gain total control of Florida?
Mrrafil [7]

Answer:

Seven Years' War

Explanation:

3 0
3 years ago
Thinking in terms of a situation’s current state and not having the ability to mentally reverse actions are limitations of the _
pickupchik [31]

The correct answer would be option D, Preoperational.

Thinking in terms of a situation's current state and not having the ability to mentally reverse actions are limitations of the Preoperational stage.

Explanation:

According to Piaget's Cognitive Development Theory, there are four stages of development in Children. These are as follows:

  • Sensorimotor
  • Preoperational
  • Concrete
  • Formal

The Preoperational stage starts at an age of two and lasts until the age of seven years. According to Preoperational stage in Piaget's theory, the children at this age cannot use logic. The children during this stage cannot transform, combine or separate ideas.

This means that when a child is not able to logically interpret something, he is in the Preoperational stage.

Learn more about Piaget's Theory of Cognitive Development at:

brainly.com/question/6704782

#LearnWithBrainly

4 0
4 years ago
Researchers studied the mean egg length​ (in millimeters) for a bird population. After taking a random sample of​ eggs, they obt
loris [4]

Answer: The margin of error is 7.5

Explanation:

Since we know that the interval is of the form MOEx±, we have that 45 = MOEx−and 60 = MOEx+.by solving this system of equations, we find that MOE = 7.5

4 0
3 years ago
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