An electric company received a shipment of several thousandresistors with 100 ohm ratings. A sample of nine resistors wasmeasured with a laboratory standard instrument and gave thefollowing measurements (assume that the population distribution ofthe measurements is normal): 102.0 103.9 101.4 103.7 102.6 102.2104.2 101.9 100.6 a. Get the 95% confidence interval for the meanrating in ohms of this shipment of resistors. b. Get the 95%confidence interval for the variance of the ratings in ohms of thisshipment of resistors. c. Get the 95% confidence interval for thestandard deviation of the ratings in ohms of this shipment ofresistors.
