A wine manufacturer is concerned that the percentage of alcohol in each bottle may not be the 13% as advertised on the bottle. A random sample of 31 bottles is tested. The average alcohol percentage is 12.58% and the standard deviation is 0.25%. Assume alcohol content is normally distributed.
-The null and alternative hypothesis to test if the alcohol percentage is different from 13% is _____.

Question

Quizplus · Accepted Answer

The null hypothesis should state that the alcohol percentage is equal to 13%, which is option B. The alternative hypothesis should state that the alcohol percentage is different from 13%, which is also option B. The other options have incorrect null and/or alternative hypotheses.

A Wine Manufacturer Is Concerned That the Percentage of Alcohol