Question

A researcher claims that the amounts of acetaminophen in a certain brand of cold tablets have a
standard deviation different from the ? = 3.3 mg claimed by the manufacturer.

Assuming that a hypothesis test is conducted to test this claim, identify the
null hypothesis H₀ and the alternative hypothesis H_a.

Answer 1

Here' the concept and the answer to the questions. Please don't hesitate to give a "thumbs up" in case you are satisfied with the answer

As a concept please remember this:

The alternate hypothesis should always have the claim.

Thus the alternate hypothesis is :

The amounts of acetaminophen in a certain brand of cold tablets have a standard deviation different from the ? = 3.3 mg

The null hypothesis will be reverse/mutually exclusive of the alternate hypothesis

The amounts of acetaminophen in a certain brand of cold tablets have a standard deviation IS NOT different from the ? = 3.3 mg