3 years ago

Suppose that y varies inversely with x. Write an equation for the inverse variation. y = 2 when x = 3

Mathematics

1 answer:

sattari [20]3 years ago

8 0

C would be your answer because inverse variation is y=k/x

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3 years ago

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For a normal distribution with μ=500 and σ=100, what is the minimum score necessary to be in the top 60% of the distribution?

STatiana [176]

Answer:

475.

Step-by-step explanation:

We have been given that for a normal distribution with μ=500 and σ=100. We are asked to find the minimum score that is necessary to be in the top 60% of the distribution.

We will use z-score formula and normal distribution table to solve our given problem.

$z=\frac{x-\mu}{\sigma}$

Top 60% means greater than 40%.

Let us find z-score corresponding to normal score to 40% or 0.40.

Using normal distribution table, we got a z-score of $-0.25$ .

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$-25=x-500$

$-25+500=x-500+500$

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Therefore, the minimum score necessary to be in the top 60% of the distribution is 475.

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3 years ago

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4 years ago

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