QUESTION 17 Lena finds that, in a sample of 36 children, the mean age at which they first begin to combine words is 20.7 months, with a standard deviation of 1.95 months. Identify the correct critical value that you would use to find a 95% confidence interval. O z = 1.960 O t = 2.030 O t = 2.028

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QUESTION 17
Lena finds that, in a sample of 36 children, the mean age at which they first begin to combine words is 20.7 months, with a standard deviation of 1.95
months.
Identify the correct critical value that you would use to find a 95% confidence interval.
z = 1.960 O t= 2.030 O t = 2.028
Transcribed Image Text:QUESTION 17 Lena finds that, in a sample of 36 children, the mean age at which they first begin to combine words is 20.7 months, with a standard deviation of 1.95 months. Identify the correct critical value that you would use to find a 95% confidence interval. z = 1.960 O t= 2.030 O t = 2.028
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