Show your solution how did you get it .... thanks Metal conduits or hollow pipes are used in electrical wiring. In testing 1-inch pipes, these data are obtained on the outside diameter (in inches) of the pipe: 1.2811.2931.2871.2861.2881.2931.2911.2951.2921.2911.2901.2961.2891.2891.2861.2911.2911.2881.2891.286 Assume that the sampling is from a normal distribution. Find a 95% confidence interval on the mean outside diameter of pipes of this type.

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Metal conduits or hollow pipes are used in electrical wiring. In testing 1-inch pipes, these data are obtained on the outside diameter (in inches) of the pipe:

1.2811.2931.2871.2861.2881.2931.2911.2951.2921.2911.2901.2961.2891.2891.2861.2911.2911.2881.2891.286

Assume that the sampling is from a normal distribution. Find a 95% confidence interval on the mean outside diameter of pipes of this type.

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