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ziro4ka [17]
2 years ago
4

Lorena took a survey of the students in her honors science class to determine how many are going to college. She found that 85%

of the students plan to go to college. Can Lorena make the inference that 85% of all the seniors at her school are going to college? Check all that apply. No, Lorena’s sample was not a random sample of the entire school. No, to make a valid inference, Lorena would have to survey every senior. No, Lorena’s sample was biased because it was taken only from an honors class. Yes, Lorena’s sample was unbiased. Yes, Lorena’s inference would be correct.
Mathematics
1 answer:
sveticcg [70]2 years ago
4 0

Answer:

The Right Answers...

No, Lorena’s sample was not a random sample of the entire school.

No, Lorena’s sample was biased because it was taken only from an honors class.

I took the test and these are the answers it says are correct.

Step-by-step explanation:


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The mapping for reflection across the x-axis is given by (x,-y)

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Evaluate ∫SF⃗ ⋅dA⃗ , where F⃗ =(bx/a)i⃗ +(ay/b)j⃗ and S is the elliptic cylinder oriented away from the z-axis, and given by x2/
Norma-Jean [14]

Answer:

Therefore surface integral is \pi(a^2+b^2)c-0-0=\pi(a^2+b^2)c.

Step-by-step explanation:

Given function is,

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To find,

\int\int_{S}\vec{F}dS  

where S=A=surfece of elliptic cylinder we have to apply Divergence theorem so that,

\int\int_{S}\vec{F}dS

=\int\int\int_V\nabla.\vec{F}dV

=\int\int\int_V(\frac{b}{a}+\frac{a}{b})dV  

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\int\int_{S_2}\vex{F}.dS_2=\int\int_{S_2}. -dA      

=\int\int_{S_2}. -dA=0

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\pi(a^2+b^2)c-0-0=\pi(a^2+b^2)c

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