Question: Refer to Exercise 11.26 and obtain a 90% confidence interval for the standard deviation of the times needed to count 20 bolts. 10.78 9.39 9.84

Refer to Exercise 11.26 and obtain a 90% confidence interval for the standard deviation of the times needed to count 20 bolts.

Refer to Exercise 11.26 and obtain a 90% confidence interval

10.78 9.39 9.84 13.94 12.33 7.32 7.91 15.58

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