In a sample of 80 children, the mean age at which they first began to combine words was 16.51 months with a sample standard deviation of 9.59 months.  Construct a 95% confidence interval for the mean age children begin to combine words. What is the Lower Bound of the confidence interval?      Question 3 options:   13.124   13.776   14.376   14.991

MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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In a sample of 80 children, the mean age at which they first began to combine words was 16.51 months with a sample standard deviation of 9.59 months. 

Construct a 95% confidence interval for the mean age children begin to combine words.

What is the Lower Bound of the confidence interval? 

 

 

Question 3 options:

 

13.124

 

13.776

 

14.376

 

14.991

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