Baby talk: In a sample of 69 children, the mean age at which they first began to combine words was 16.44 months, with a standard deviation of 9.47 months. Part 1 out of 2 Construct a 98% confidence interval for the mean age at which children first begin to combine words. Round the answers to two decimal places. A 98% confidence interval for the mean age is

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Baby talk: In a sample of 69 children, the mean age at which they first began to combine
words was 16.44 months, with a standard deviation of 9.47 months.
Part 1 out of 2
Construct a 98% confidence interval for the mean age at which children first begin to
combine words. Round the answers to two decimal places.
A 98% confidence interval for the mean age is
CHECA
NEXI
Transcribed Image Text:Baby talk: In a sample of 69 children, the mean age at which they first began to combine words was 16.44 months, with a standard deviation of 9.47 months. Part 1 out of 2 Construct a 98% confidence interval for the mean age at which children first begin to combine words. Round the answers to two decimal places. A 98% confidence interval for the mean age is CHECA NEXI
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