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marusya05 [52]
3 years ago
9

What does a standard score measure

Mathematics
1 answer:
Alexxx [7]3 years ago
5 0
The standard score (more commonly referred to as a z-score) is a very useful statistic because it (a) allows us to calculate the probability of ascore occurring within our normal distribution and (b) enables us to compare two scores that are from different normal distributions.
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Answer:

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Step-by-step explanation:

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3 years ago
21x^3 + 6x^2 - 28x - 8 factor this expression with work please?
marusya05 [52]
21x^3 + 6x^2 - 28x - 8 \\ \\ 3x^2 (7x + 2) - 4(7x + 2) \\ \\ (7x + 2)(3x^2 - 4) \\ \\

The final result is: (7x + 2)(3x<span>² - 4).</span>
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