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Mathematics 11 Online
zarkam21:

Help on this please with an explanation

zarkam21:

1 attachment
zarkam21:

@Vocaloid

Vocaloid:

general formula for z-score of a particular value z-score = (that value - mean)/standard deviation

Vocaloid:

(127-mean)/sd = ?

zarkam21:

-2.3

Vocaloid:

good the question says two decimal places so it would be -2.30

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