Height and weight are two measurements used to track a child's development. The World Health Organization...
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 girls in the reference population were normally distributed with a mean µ = 10.2 kilogram and standard deviation σ = 0.8 kilogram . Calculate the z-scores that correspond to the following weights and interpret them.
a. 11 kg
b. 7.9 kg
c. 9.7 kg
Select your answer from one of the following options.
- a.7.9 kg is the most unusual weight among the 3, because it is 2.87 standard deviations below the mean of 10.2 kg.
- b.9.7 kg is the most unusual weight among the 3 because the z-score is the closest to 0.
- c.11 kg is the most unusual weight among the 3, because it is the largest.
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