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Height and weight are
two measurements used to track a child’s development. The World Health
Organization measures child development by comparing the weights of children
who are the same height and the same gender.
In 2009, weights for
all 80 cm girls in the reference population had a mean ?=
10.2 kg and standard deviation ?= 0.8 kg.
Weights are normally
distributed. X~ N(10.2, 0.8).
Calculate the z-scores
that correspond to the following weights.
a. 11
kg Enter answer rounded to 2 decimal places.
b. 7.9
kg Enter answer rounded to 3 decimal places.
c. 12.2
kg Enter answer rounded to 2 decimal places.
