Data Collected by Child Development Scientists Produced the Following 90

question 22

Multiple Choice

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: 10.2 < μ(age) < 13.5.

• A)90% of the children in this sample said their first word when they were between 10.2 and 13.5 months old.
• B)We are 90% sure that the average age at which children in this sample said their first word was between 10.2 and 13.5 months.
• C)Based on this sample,we can say,with 90% confidence,that the mean age at which children say their first word is between 10.2 and 13.5 months.
• D)We are 90% sure that a child will say his first word when he is between 10.2 and 13.5 months old.
• E)If we took many random samples of children,about 90% of them would produce this confidence interval.

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