1. Data collected by child development scientists produced thefollowing 90% comf
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1. Data collected by child development scientists produced thefollowing 90% comfidence interval for the average age (in months)at which chi;deren say their first word: 10.4 < <13.8 A. We are 90% sure that a child will say his first word whenhe is between 10.4 and 13.8 months old. B. We are 90% sure that a child will say his first wordwhen he is older than 10.4 months C Based on the sample, we can say, with 90% confidence, thatthe mean age at which children say their first word is between 10.4and 13.8 months D. We are 90% sure that the average age at which children inthis sample said their first word wa between 10.4 and 13.8months. E. 90% of the children in this sample said their first wordthey were between 10.4 and 13.8 months old. 1. Data collected by child development scientists produced thefollowing 90% comfidence interval for the average age (in months)at which chi;deren say their first word: 10.4 < <13.8 A. We are 90% sure that a child will say his first word whenhe is between 10.4 and 13.8 months old. B. We are 90% sure that a child will say his first wordwhen he is older than 10.4 months C Based on the sample, we can say, with 90% confidence, thatthe mean age at which children say their first word is between 10.4and 13.8 months D. We are 90% sure that the average age at which children inthis sample said their first word wa between 10.4 and 13.8months. E. 90% of the children in this sample said their first wordthey were between 10.4 and 13.8 months old.Explanation / Answer
C) Based on the sample, we can be 90% confident that the mean age at which children say their first word is between 10.4 and 13.8 months.
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