Data Collected by Child Development Scientists Produced the Following 90

Data collected by child development scientists produced the following 90% confidence interval for the average age (in months) at which children say their first word: 10.6 < μ(age) < 13.1.

A) We are 90% sure that the average age at which children in this sample said their first word was between 10.6 and 13.1 months.
B) If we took many random samples of children,about 90% of them would produce this confidence interval.
C) We are 90% sure that a child will say his first word when he is between 10.6 and 13.1 months old.
D) 90% of the children in this sample said their first word when they were between 10.6 and 13.1 months old.
E) Based on this sample,we can say with 90% confidence that the mean age at which children say their first word is between 10.6 and 13.1 months.

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