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melamori03 [73]
3 years ago
7

Scientists interested in the effect of exercise on the duration of sleep conducted the following study: 180 overweight men were

randomly assigned to two groups. One group was instructed to perform aerobic exercise for about an hour per day, and the other group was instructed to continue with their exercise-less routine.
The sleep duration of each subject was measured at two points: before the randomization and 101010 weeks after it. Then, the scientists calculated the change in sleep duration for each subject, where a positive value means the duration increased, and a negative value means is decreased.

What type of statistical study did scientists use?
English
1 answer:
adell [148]3 years ago
7 0

Answer:

B). Experimental.

Explanation:

'Experimental study' is characterized as the study pattern in which the researchers deliberately involve intervention or manipulation in the treatment group to observe its effect.

As per the given details, the scientists have employed an '<u>experimental research</u>' pattern because the research group was divided into two groups 'control group' and 'experimental group' where the experimental group receives an intervention('instructed to continue with their exercise-less routine'). Then the results of the two groups were observed, examined, and analyzed. Hence, it exemplifies the 'experimental research' type.

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FinnZ [79.3K]

Answer:

As penance, Jalil and his two sons build the kolba, or hut, with their bare hands for Nana.

Explanation:

“Jalil could have hired laborers to build the kolba, Nana said, but he didn’t. ‘His idea of penance.’” (10).

(HOPE IT HELPS)

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3 years ago
How have humans caused the Earth's weather changes, according to experts?
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We realease carbondioxide during burning

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3 years ago
Read 2 more answers
Which sentence best explains how the structure of the excerpt supports the authors purpose?
podryga [215]

Hello. This question is incomplete. The full question is:

Read this excerpt from james baldwin's "notes of a native son":the day of my father's funeral had also been my nineteenth birthday. as we drove him to the graveyard, the spoils of injustice, anarchy, discontent, and hatred were all around us. it seemed to me that god himself had devised, to mark my father's end, the most sustained and brutally dissonant of codas. and it seemed to me, too, that the violence which rose all about us as my father left the world had been devised as a corrective for the pride of his eldest son.which sentence best explains how the structure of the excerpt supports the author's purpose?

a.it ties baldwin's father's funeral to his birthday and shows that the author is angry that his father died on that day.  b.it compares a term signifying the end of a musical piece with his father's death to illustrate the finality of death.  c.it contrasts the somber mood of a funeral procession with the happy memories baldwin has about his father.  d.it interweaves elements of narrative and commentary to convey the message that hatred is destructive.

Answer:

d. it interweaves elements of narrative and commentary to convey the message that hatred is destructive.

Explanation:

The text above was taken from the autobiography of a black author, who wanted to show the violence, intolerance and injustices that racism caused in a society. He presents these themes well in the excerpt shown above, where the structure allows the author to interweave elements of narrative and commentary to convey the message that hate is destructive and how it shook his family and transformed a moment of celebration into a moment of mourning.

4 0
3 years ago
In 3-5 sentences, write your opinion on breaking the rules of art
Ierofanga [76]

Answer:

Breaking the rules of art can be dangerous because you don't know how to start or finish, they are still rules. Art is a delicate, but fun, state of mind. You have to focus but make sure you know what the rules are.

Explanation:

because it is

8 0
3 years ago
ᵖˡˢ ᵃⁿˢʷᵉʳ ⁱⁿᵉᵉᵈ ᵖˡˢ​
Goshia [24]

Answer:

Words and their context clues:

precocious → skilled at the age of three

flabbergasted → blown away

dexterity → the ease with which she uses her hands

gloated → took pride in her paintings

agape → mouth wide open

Definition of the words:

precocious → to develop at an early age

flabbergasted → greatly surprised

dexterity → skillfulness in using the hands

gloated →  to relish or dwell pleasantly on one's success or misfortunes.

agape → very wide open

Explanation:

From the above, I have been able to write out the context clues that helpus to understand the underlined words.

These context clues can be seen in the passage if carefully studied.

Also, I went ahead to give their meanings/definitions.

3 0
3 years ago
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