A sample of eight repair records for a certain fiberoptic component was drawn, and the

Chapter 5, Problem 24

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A sample of eight repair records for a certain fiber optic component was drawn, and the cost of each repair, in dollars, was recorded. The results were  

30         35         19         23         27         22         26         16

Assume the population of repair records is normal.  Find a 95% confidence interval for the population standard deviation.

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