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melisa1 [442]
2 years ago
12

A teacher wants to know if burning a scented candle affects students’ performance on pop quizzes. In the experiment, there will

be a treatment group and a control group each taking their quizzes in a room that either does or does not have a scented candle burning. On a randomly chosen day, the first 15 students who arrive to class will be the control group while the last 15 students who arrive will be the treatment group. Which statement best describes the composition of the groups? The characteristics of the two groups should be roughly equivalent because both groups have 15 students. The characteristics of the two groups should be roughly equivalent because the students were split into groups on a randomly chosen day. The characteristics of the two groups might not be roughly equivalent because the students were not labeled and given a random number to place them in one of the groups. The characteristics of the two groups might not be roughly equivalent because students who arrive around the same time might be friends and have similar preferences for scented candles.
Mathematics
1 answer:
ArbitrLikvidat [17]2 years ago
6 0

The characteristics of the two groups might not be roughly equivalent because the students were not labeled and number wasn't given.

<h3>What is Composition? </h3>

This is the process which involves combining different parts in other to form a whole.

The student were not labeled and number wasn't given to place them in one of the groups will best describe their roughly equivalent composition hence option C was chosen.

Read more about Composition here brainly.com/question/9464122

#SPJ1

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Finger [1]
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6 0
3 years ago
If y varies inversely as x and y=-11 when x=1, what is y when x =11?
faust18 [17]

Answer:

I thinks it is -11

Step-by-step explanation:

3 0
3 years ago
What is the equation of a line that contains the point (2,1) and is perpendicular to the line: y = 3x – 4?
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7 0
3 years ago
850-53x m= 720-39x m
insens350 [35]

Answer:

9.286

Step-by-step explanation:

I'm not guaranteeing this answer. If this is correctly written without any indication of how to deal with x, then here is as much as you can do.

850-53x m= 720-39x m                         Subtract 720 from both sides.

850 - 720 - 53x = 720 - 720 - 39xm      Combine

- 53xm + 130 = - 39xm                             Add 53x

-53x+53xm + 130 = -39x + 53xm            Combine

                      130 = 14xm                         Divide by 14

xm = 130/14

xm = 9.28

===============================

You can use the same steps above. I'm abbreviating the steps because they are the same.

I'm sure there is more to the problem, but I can't imagine what it is. If you have additional directions, put it under this answer. I will get it as a comment.

850-53m= 720-39m

850 - 720 - 53m = - 39m

130 - 53m = - 39m

130 = -39m + 53m

130 = 14m

130/14 = m

m =9.286

4 0
2 years ago
Chang runs each lap in 5 minutes. He will run at the most 30 minutes today. What are the possible numbers of laps he will run to
Ipatiy [6.2K]

Answer:

6

Step-by-step explanation:

all you have to do is 30 / 5 what equals 6

4 0
3 years ago
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