An airline serves bottles of Galena Spring Water that are
An airline serves bottles of Galena Spring Water that are supposed to contain an average of 10 ounces. The filling process follows a normal distribution with process standard deviation 0.07 ounce. Twelve randomly chosen bottles had the weights shown below (in ounces).
(a) Set up a two-tailed decision rule to detect quality control violations using the 5 percent level of significance.
(b) Carry out the test.
(c) What assumptions are you making, if any?
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