Question: A torque sensor is tested 40 times, yielding a sample mean of 52 Nm. Assume the torque readings are normally distributed and the population standard

A torque sensor is tested 40 times, yielding a sample mean of 52 Nm. Assume the torque readings are normally distributed and the population standard deviation is known to be 4 Nm. Construct a 95% confidence interval for the true mean torque

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