4.19. The Mental Development Index (MDI) of the Bay- ley Scales of Infant Development is a standardized
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4.19. The Mental Development Index (MDI) of the Bay- ley Scales of Infant Development is a standardized measure used in studies with high-risk infants. It has approximately a normal distribution with a mean of 100 and a standard deviation of 16.
(a) What proportion of children have a MDI of at least 120?
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Related Book For
Statistical Methods For The Social Sciences
ISBN: 9780130272959
4th Edition
Authors: Alan Agresti, Barbara Finlay
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