Q: What are the z score boundaries for the middle of 50 percent of the distribution?

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The boundaries are Â± 0.8416

-1.28

-.25

A Z score of 300 is an extremely large number as the z scores very rarely fall above 4 or below -4. About 0 percent of the scores fall above a z score of 300.

The mean is 46.

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The boundaries are Â± 0.8416

50 * * * * * z = -0.67449 to z = +0.67449

z = - 0.8416 to z = + 0.8416

-1.28

-.25

0.2533

0.13

z = 0.8416

It is 84.3%

z = 1.75

A Z score of 300 is an extremely large number as the z scores very rarely fall above 4 or below -4. About 0 percent of the scores fall above a z score of 300.

A Z-Score of 0 separates the upper 50% of the area from the lower 50% of the area. A Z-Score of 0 is at the mean, median, and mode of the distribution.