An electric company received a shipment of several thousand resistors with 100 ohm ratings. A sample...

An electric company received a shipment of several thousand resistors with 100 ohm ratings. A sample of nine resistors was measured with a laboratory standard instrument and gave the following measurements (assume that the population distribution of the measurements is normal): 102.0 103.9 101.4 103.7 102.6 102.2 104.2 101.9 100.6 a. Get the 95% confidence interval for the mean rating in ohms of this shipment of resistors. b. Get the 95% confidence interval for the variance of the ratings in ohms of this shipment of resistors. c. Get the 95% confidence interval for the standard deviation of the ratings in ohms of this shipment of resistors.

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orchestra answered 1 year ago

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