Study of children with developmental delays. It is well known that children with developmental delays (i.e., mild mental retardation) are slower, cognitively, than normally developing children. Are their social skills also lacking? A study compared the social interactions of the two groups of children in a controlled playground environment. (American Journal on Mental Retardation, idea. 1992.) One variable of interest was the number of intervals of “no play” by each child. Children with developmental delays had a mean of 2.73 intervals of “no play” and a standard deviation of 2.58 intervals. Based on this information, is it possible for the variable of interest to be normally distributed? Explain.
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