McConaughy (1980) has argued that younger children organize stories in terms of simple descriptive (and then .

McConaughy (1980) has argued that younger children organize stories in terms of simple descriptive (€œand then . . .€) models, whereas older children incorporate causal statements and social inferences. Suppose we asked two groups of children differing in age to summarize a story they just read. We then counted the number of statements in the summary that can be classed as inferences. The data are shown.

(a) Analyze these data using the two-tailed rank-sum test.
(b) What would you conclude?

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dd-4764875 YC-0103252