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# Quality Check on Water Bottle Volume

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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? BottleFill
10.02 9.95 10.11 10.10 10.08 10.04 10.06 10.03 9.98 10.01 9.92 9.89

https://brainmass.com/statistics/normal-distribution/quality-check-water-bottle-volume-172299

#### Solution Preview

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 ...

#### Solution Summary

Word document attached carries out a two-tailed test to make sure bottles contain 10 ounces, using 5% significance and listing assumptions made.

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