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zvonat [6]
4 years ago
10

Categorize these samples as representative or not representative of the given populations.

Mathematics
1 answer:
yuradex [85]4 years ago
5 0
<u>Representatives: This means that a certain amount of people would constitute what the majority would think too.

</u>1) Tina interviews the school's soccer team about the exercise habits of  the students at her school. (implying all the students). This means that Tina only goes to the soccer team instead of the whole school to find out the whole school's exercise habit.
<u></u>2) Alana also counts as representatives, because she did not interview ALL of the teachers, rather just a selected majority (in this case)
5) For Jeremy, he only interviews 5 students from each class rather than all students<u>
Not Representatives: Each person is given a choice of opinion and does not affect other people.
</u>3) Joe talks to fathers of high school students, which could be larger than just 'representatives', and implies a larger group of people, and is not as selective as having representatives
<u />4) Social Media constitutes of a large group of people, generally larger than a school, and if people take time to take the survey, it will generate a larger test-group. Also, everybody answering the survey would take time to think about themselves, and only represent themselves, and not others.


hope this helps
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A poll of all 2000 students in a high school found that 94% of its students owned cell phones.
LekaFEV [45]

Answer: F. Parameter, because the data set of all 2000 students in a high school is a population.

Step-by-step explanation:

Parameters is a variable or measure that is calculated from the entire population of data while a statistic is done from a sample of the data.

The question notes that the poll was done on <u>all 2,000</u> students in a high school. This means that the poll is a Parameter because it was done on the entire population of the high school.

7 0
3 years ago
What is the answer?? And please try to explain how you got to the answer thanks
prisoha [69]
It will be Wednesday.

explanation:
in the question it says that it was march 13th yesterday and that means today is March 14th, therefor tomorrow would be Sunday March 15th, and when you go to a calendar and go to the next month same and number of day you will get April 15th which is a Wednesday
4 0
3 years ago
Read 2 more answers
Let c be the curve of intersection of the parabolic cylinder x2 = 2y, and the surface 3z = xy. find the exact length of c from t
Mandarinka [93]
Parameterize the intersection by setting x(t)=t, so that

x^2=2y\iff y=\dfrac{x^2}2\implies y(t)=\dfrac{t^2}2
3z=xy\iff z=\dfrac{xy}3\implies z(t)=\dfrac{t^3}6

The length of the path C is then given by the line integral along C,

\displaystyle\int_C\mathrm dS

where \mathrm dS=\sqrt{\left(\dfrac{\mathrm dx}{\mathrm dt}\right)^2+\left(\dfrac{\mathrm dy}{\mathrm dt}\right)^2+\left(\dfrac{\mathrm dz}{\mathrm dt}\right)^2}\,\mathrm dt. We have

\dfrac{\mathrm dx}{\mathrm dt}=1
\dfrac{\mathrm dy}{\mathrm dt}=t
\dfrac{\mathrm dz}{\mathrm dt}=\dfrac{t^2}2

and so the line integral is

\displaystyle\int_{t=0}^{t=2}\sqrt{1^2+t^2+\dfrac{t^4}4}\,\mathrm dt

This result is fortuitous, since we can write

1+t^2+\dfrac{t^4}4=\dfrac14(t^4+4t^2+4)=\dfrac{(t^2+2)^2}4=\left(\dfrac{t^2+2}2\right)^2

and so the integral reduces to

\displaystyle\int_{t=0}^{t=2}\frac{t^2+2}2\,\mathrm dt=\dfrac{10}3
3 0
3 years ago
What is the precent of change from 92 to 108
kobusy [5.1K]
108-92=16
16 divide 92=0.173913 multiply by 100=17.3913%
ANSWER
17.39% in change
4 0
3 years ago
Make the equation true <br> 2 x ( 6+4 )=
PilotLPTM [1.2K]

Answer:20

Step-by-step explanation:

1) You add (6+4) and should get 10

Then u will multiply 10 and 2 which is 20

Do you understand?

3 0
4 years ago
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