12.26Xr12-26A federal agency responsible for enforc-ing laws governing weights and measures…

12.26Xr12-26A federal agency responsible for enforc-ing laws governing weights and measures routinelyinspects packages to determine whether the weight ofthe contents is at least as great as that advertised on thepackage. A random sample of18 containers whosepackaging states that the contents weigh 8 ounces wasdrawn. The contents were weighed and the resultsfollow. Can we conclude at the 1% significance levelthat on average the containers are mislabeled?7.80 7.91 7.93 7.99 7.94 7.757.97 7.95 7.79 8.06 7.82 7.897.92 7.87 7.92 7.98 8.05 7.91