# Question

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?

(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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