To find the standard deviation of the diameter of wooden dowels, the manufacturer measures 19 randomly selected
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Question:
To find the standard deviation of the diameter of wooden dowels, the manufacturer measures 19 randomly selected dowels and finds the standard deviation of the sample to be s = 0.16. Find the 95% confidence interval for the population standard deviation σ.
A. 0.13 < σ < 0.22
B. 0.12 < σ < 0.24
C. 0.11 < σ < 0.25
D. 0.15 < σ < 0.21
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