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aev [14]
3 years ago
15

Researchers wanted to determine if having a DVD player in the bedroom is associated with obesity. The researchers administered a

questionnaire to 363 twelve-year-old adolescents. After analyzing the results, the researchers determined that the body mass index of the adolescents who had a DVD player in their bedroom was significantly higher than that of the adolescents who did not have a DVD player in their bedroom.Why is this an observational study? What type of observational study is this? Why is this an observational study?A. The researchers observed the behavior of the individuals in the study without trying to influence an explanatory variable of the study. B. The researchers tried to influence the outcome of the study. C. The researchers intentionally changed an explanatory variable of the study. D. The researchers administered a questionnaire to obtain their data without trying to influence an explanatory variable of the study.
Mathematics
1 answer:
Mashutka [201]3 years ago
3 0

Answer:

is c

Step-by-step explanation:

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DerKrebs [107]

Answer:

D

Step-by-step explanation:

Mode is simply the number that is repeated in the data.

4 0
3 years ago
Mrs.Alvarez bought a new car her monthly payments are $525.If she will pay a total of $25,200 in payments,write and solve a mult
yaroslaw [1]
525 * N = 25200

you can solve it i expect.
5 0
3 years ago
12. Simplify:<br> 5x + 3y - 2y + 3xy + 5xy - 10x
Serggg [28]

Hey there!

\textsf{5x + 3y - 2y + 3xy + 5xy - 10x}

\textsf{Combine like terms}

\textsf{(5x - 10x) + (3y - 2y) + (3xy + 5xy)}\\\mathsf{5x - 10x = -5x}\\\mathsf{3y - 2y = 1y}\\\mathsf{3xy + 5xy= 8xy}\\\boxed{\boxed{\mathsf{Answer: \bf{8xy-5x+y}}}}\huge\checkmark

\textsf{Good luck on your assignment and enjoy your day!}

~\frak{LoveYourselfFirst:)}

5 0
3 years ago
A factory can fill 225 bottles of orange juice each hour. Each bottle of orange juice contains 24 fluid ounces. Each bottle of j
lozanna [386]

Answer:

27 i think

Step-by-step explanation:

I divided them to make sure its right im not 100 percent sure tho

8 0
3 years ago
Order of Operations 4
dsp73

Answer:

1. 21

2. -4

3. 20

4. 1

5. 4

6. -6

Step-by-step explanation:

5 0
3 years ago
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