Essay
A developmental psychologist was interested in how long it would take a particular 7-year-old child to complete three different aptitude tests as compared with 7-year-olds in the general population.The child's time for reading was 31 minutes (population: M = 29,SD = 4).For math,it was 26 minutes (population: M = 32,SD = 2).For science,it was 40 minutes (population: M = 31,SD = 4).
a.Calculate the child's Z scores for each of the aptitude tests.
b.Which aptitude test(s)took the child substantially more time to complete as compared with other 7-year-olds?
c.Which aptitude test(s)took the child substantially less time to complete as compared with other 7-year-olds?
d.Explain your answers to someone who has never had a course in statistics.
Correct Answer:
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A)Reading Z = 0.5; Math Z = -3...View Answer
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