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Baby talk: In a sample of 71 children, the mean age at which they rst began to combine words was 16.31 months, with a standard

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Baby talk: In a sample of 71 children, the mean age at which they rst began to combine words was 16.31 months, with a standard deviation of 9.62 months. Construct a 95% interval for the mean age at which they rst begin to combine words. Round die answers to two decimal places. A 95% condence interval for the mean age is E]

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