In a Sample of 8 Children, the Mean Age at Which

question 30

Multiple Choice

In a sample of 8 children, the mean age at which they first began to combine words was 16.41 months, with a standard deviation of 5.11 months. It is reasonable to assume that the population is Approximately normal. Construct a 95% confidence interval for the mean age at which children first Begin to combine words.

• A) (15.7, 17.1)
• B) (-17.8, 50.6)
• C) (14.9, 17.9)
• D) (12.1, 20.7)

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