Understanding Basic Statistics
Understanding Basic Statistics
Critical Thinking Lorraine was in a hum when she computed a confidence interval for µ. Because a was not known, she used a Student's t distribution. However, she accidentally used degrees of freedom n instead of n - 1, Was her confidence interval longer or shorter than one found using the correct degrees of freedom n - 1 ? Explain.
Whether the Lorraine confidence interval was longer or shorter than one found using the correct degrees of freedom n-1.
As the degrees of freedom increases, the critical value decreases. Hence, the confidence interval is shorter than one found using the correct degrees of freedom n-1...
Chapter 8 Solutions
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