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Lelechka [254]
3 years ago
5

A researcher wanted to determine whether eating sugary cereal for breakfast increased the aggression of second graders during th

eir morning play period. After feeding a group of 20 students sugary cereal for breakfast she observed that, on average, the students committed 4.5 aggressive behaviors during their morning play period. In this example, the sample is:________
Mathematics
1 answer:
Artist 52 [7]3 years ago
5 0

Answer:

20 students

Step-by-step explanation:

Sample is basically a selected subset of a population. A researcher is investigating the effect of sugary cereal on the aggression of second graders during morning play period. For this purpose, a researcher selected 20 student and feed them a sugary cereal and then observe their behaviors. Here, 20 student are selected from the all second grader students. So, the sample in the conducted study are 20 students.

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Which expression can you use to find 16÷4/5?
Archy [21]

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Step-by-step explanation:

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GrogVix [38]
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8 0
3 years ago
I don’t understand, help me out
Vikki [24]

Answer:

a. 76 b. 52

Step-by-step explanation:

The perimeter of a rectangle is the sum of its four sides.

Now all rectangles have a width and a length.

To find the perimeter it is 2 width + 2 length or 2W +2L.

So if the Perimeter P = 344 and Width W = 76 and P = 2W + 2L

Then...

2(76) + 2L = 344 multiply 2 and 76

2L + 152 = 344 subtract 152 from both sides

2L = 192 divide both sides by 2

L = 96

The length is 96.

The equation of an area of a rectangle is A or  area = width x length or W x L

So the equation is A = W x L

If the area is 4732 and the length is 91 then

91W = 4732 divide both sides by 91

W = 52

The width is 52.

Hope that helps, good luck with your homework!

7 0
2 years ago
Which of the following statements about the box-and-whisker plot below is not true?
Alex_Xolod [135]

Answer: D

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