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3 years ago

Given a mean of 43.8 and a standard deviation of 8.7 what is the z score of the value 40

Mathematics

2 answers:

DanielleElmas [232]3 years ago

8 0

$z=\dfrac{40-43.8}{8.7}\approx-0.4368$

lana [24]3 years ago

4 0

Answer:

-0.44

Step-by-step explanation:

Given a mean of 43.8 and a standard deviation of 8.7

$z-score =\frac{x-mean}{standard deviation}$

mean = 43.8

standard deviation = 8.7

now plug in the values of mean and standard deviation

x= 40

$z-score =\frac{40-43.8}{8.7}$

$z-score =\frac{-3.8}{8.7}$

z-score = -0.44

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