10 The manager of the service department of a local car dealership has noted that the service times of a sample of 16 new automobiles has a standard deviation of 5 minutes. A 95% confidence interval estimate for the variance of service times for all their new automobiles is O a. 13.642 to 59.885. Ob. 9.46 to 34.09. O c. 2.144 to 9.948. Od. 2.728 to 11.977. QUESTION 11

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