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Ede4ka [16]
3 years ago
7

If you had the z-score, mean and standard deviation, how could you find the x - value? Please help, 99 points!

Mathematics
1 answer:
VladimirAG [237]3 years ago
8 0

Answer:

z * sigma+u = x

Step-by-step explanation:

z = (x-u)/ sigma

z is the z score, u is the mean, sigma is the standard deviation

We need to solve for x

Multiply each side by sigma

z * sigma =  (x-u)/ sigma * sigma

z * sigma = x-u

Add u to each side

z * sigma+u = x-u+u

z * sigma+u = x

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