The manufacturer of Twitchy Energy Drink is doing a quality

The manufacturer of Twitchy Energy Drink is doing a quality inspection to make sure that the caffeine content of the drink is meeting specifications of 79.6 mg per can. Suppose a quality inspector takes a sample of size 12 from the production line and finds that the average caffeine content in the sample is 78.3 mg, with a standard deviation of 0.14 mg. Calculate the test statistic for testing the hypothesis that the true mean caffeine content is less than 79.6 mg per can, to two decimal places.

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