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lina2011 [118]
3 years ago
6

Use the DistributiveProperty to write an equivalent expression 3(-6.45 + 5x)

Mathematics
1 answer:
Elan Coil [88]3 years ago
4 0
-19.35 + 15x

In order to get this answer distribute the 3 to the -6.45 and the 5x.
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The variance of a sample of 144 observations equals 576. the standard deviation of the sample equals?
elena55 [62]

When the variance of a sample of 144 observation is 576 then, the standard deviation of the sample equals 24

The variance is a measure of variability. It is calculated by taking the average of squared deviations from the mean. Variance tells you the degree of spread in your data set

Standard deviation is a statistic that measures the dispersion of a dataset relative to its mean and is calculated as the square root of the variance.

Given,

The number of samples = 144

The variance = 576

The standard deviation is the square root of variance

The standard deviation = \sqrt{576}=24

Hence, when the variance of a sample of 144 observation is 576 then, the standard deviation of the sample equals 24

Learn more about Standard deviation here

brainly.com/question/16555520

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