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ozzi
4 years ago
11

Regarding inferences about the difference between two population means, the sampling design that uses a pooled sample variance i

n cases of equal population standard deviations is based on:_________
Physics
1 answer:
ANEK [815]4 years ago
8 0

Answer:

independent samples.

Explanation:

  • independent samples are randomly selected models so that its findings do not depend on the values ​​of other observations. Many statistical analyzes rely on the assumption that the models are independent. Others are designed to estimate models that are not independent.
  • There are so many independent models that its choices can be randomly selected without relying on the evidence of other observations.

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A 0.07-kg lead bullet traveling 258 m/s strikes an armor plate and comes to a stop. If all of the bullet's energy is converted t
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Answer:

temperature change is 262.06°K

Explanation:

given data

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to find out

what is its temperature change

solution

we know here

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KE = 0.5 × m× v²   ...........1

here m is mass and v is velocity

KE = 0.5 × 0.07 × 258²

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2329.74 = 0.07 × 127 × ∆t

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7 0
3 years ago
What would happen to the particles in this box if it lost heat energy?
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Answer:

A

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