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2 years ago

The perimeter of a regular octoagon is 22 2/3 inches what is the length of each side

Mathematics

1 answer:

Mariana [72]2 years ago

6 0

The answer is approximately 2.8, hope this helps.

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a data set has a mean of 68 and standard deviation of 6. An element in this set is 51. What is z-score for 51? Round your answer

gogolik [260]

z = -2.83

Explanation:

Given:

Mean, μ = 68

Standard deviation, σ = 6

Data point, x = 51

Z score, z = ?

We know:

$z = \frac{data point - mean}{standard deviation} \\\\z = \frac{x - u}{p}$

Substituting the value we get:

$z = \frac{51-68}{6} \\\\z = -2.83$

A negative z score says that the data point is below average.

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3 years ago