The mass of a rock sample is 25 g and

Mathematics

2 answers:

denis23 [38]3 years ago

7 0

Answer:

Step-by-step explanation:

25 / 5 = 5 mass / density = volume

balu736 [363]3 years ago

3 0

Answer:

given us,

mass= 25g

density= 5 g/ cm2

here,

volume = mass/ density

= 25g/ 5g cm2

= 5cm2

Step-by-step explanation:

cm2 is the square

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IQ scores have a mean of 100 and a standard deviation of 15. What percentile corresponds to an IQ score of 115? Explain the step

Kryger [21]

Answer:

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Step-by-step explanation:

Here, we want to find the percentile that corresponds to an IQ score of 115.

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Now we want to find the percentile for a score if 115. For a score of 115, we can see that the difference between this score and the mean is 15 which is exactly equal to the standard deviation.

What this means is that the score is within +1 SD of the mean.

For a score of within +1 SD of the mean, the percentile is 34.13%

A score at the mean is the 50th percentile, a score which is 1 SD above or below the mean has a percentile value of 34.13%

Please, I will like you to check the attachment to see how percentiles are valued given the number of standard deviations a particular value is from the mean.