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Andrej [43]
3 years ago
5

A psychologist believes that college students who sleep 8 hours each night achieve better grades on their exams than those sleep

less than this amount. He conducts a study to determine if this belief is true. What is the Independent Variable (IV) in this study?
Health
1 answer:
stiv31 [10]3 years ago
4 0

Answer:

Hours of sleep of college students

Explanation:

In a typical experiment or scientific study, there are usually two types of variables that gives the study direction. We have dependent and independent variable.  

The independent variable which is the “cause”, is  the variable that can be manipulated by the researcher to find the possible effect it would bring on a dependent variable.

The dependent variable which is the “effect”, is the variable that changes as a result of the manipulation of the independent variable. It is dependent on the independent variable.

In the study conducted by the psychologists, the independent variable is the hours of sleep of students, which has a direct effect on the grades achieved by students (dependent variable). The grades achieved by students (dependent variable) is dependent or determined by the hours of sleep (independent variable) of students.

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Why does your heart never tire of constantly beating to pump blood throughout your body?
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Last year, Mary had a health insurance policy with a $750 deductible and 20% coinsurance. Her total medical expenses
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Answer:

Mary's total out-of-pocket costs = $3,250

Explanation:

<u>Formula:</u>

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<u>Step 1:</u>

The deductible amount that paid by the insured is $750.

<u>Step 2:</u>

The coinsurance dollar amount that paid by the insured – 20% of $12,500 = $2500

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3 years ago
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The cranial bones are bones that surround and protect our brain. In infants, the cranium is composed of different separate cranial bones.

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3 years ago
Read 2 more answers
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