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shepuryov [24]
3 years ago
15

Maggie wants to know how many students in her school enjoy watching sports on TV. She asks all 25 students in her math class and

finds that 60% of her classmates enjoy watching sports on TV. She claims that 60% of the school's student population would be expected to enjoy watching sports on TV. Is Maggie making a valid inference about her population?
Yes, it is a valid inference because she asked all 25 students in her math class

Yes, it is a valid inference because her classmates make up a random sample of the students in the school

No, it is not a valid inference because her classmates do not make up a random sample of the students in the school

No, it is not a valid inference because she asked all 25 students in her math class instead of taking a sample from her geography class
Mathematics
2 answers:
RSB [31]3 years ago
6 0
No, it is not a valid inference because her classmates do not make up a random sample of the students in the school.
Viefleur [7K]3 years ago
4 0
Your answer to your question is the 3rd option.
I hope this helps!
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Mr. Ehling bought a pencil sharpener and 2 posters for a total of $28.99. If
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Answer:

$3.50

Step-by-step explanation:

Given:

1 sharpener + 2 posters = $28.99

1 sharpener = $21.99

1 poster = ?

Solve:

1 sharpener + 2 posters = $28.99

$21.99 + 2 posters = $28.99

               2 posters = $28.99 - $21.99

               2 posters = $7

                 1 poster = $7/ 2 = $3.5

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What is the horizontal difference between (4, 8) and (-2, 2)?
Stolb23 [73]

Answer:

6 units

Step-by-step explanation:

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4 0
3 years ago
What is the amplitude of y=1/2 sin2x
Colt1911 [192]
(-\frac{1}{2},\frac{1}{2})
Amplitutde:
(\frac{1}{2}-(-\frac{1}{2}))=1
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8 0
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Read 2 more answers
Find the domain of the function algebraically:<br><br> <img src="https://tex.z-dn.net/?f=R%28x%29%3D%5Cfrac%7Bx%7D%7Bx%5E%7B2%7D
BigorU [14]

The domain of the function is all real numbers except 2 and -1

Step-by-step explanation:

Domain is the set of inputs of a function on which the function is defined.

Given function is:

R(x) = \frac{x}{x^2-x-2}

In case of a function involving fraction, the function is undefined if the denominator is zero so in order to find the domain of the function algebraically , we have to find the values on which the function will be undefined

x^2-x-2 = 0\\x^2-2x+x-2 = 0\\x(x-2)+1(x-2) = 0\\(x+1)(x-2) = 0\\x+1 = 0 => x=-1\\x-2=0 = > x=2

The function will be undefined on x=-1 and x=2

So,

The domain of the function is all real numbers except 2 and -1

Keywords: Domain, functions

Learn more about domain and functions at:

  • brainly.com/question/2150928
  • brainly.com/question/2154850

#LearnwithBrainly

7 0
4 years ago
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