A pharmaceutical company wants to answer the question whether it takes longer than 45 seconds for a drug in pill form to dissolve in the gastric juices of the stomach. A sample was taken from patients taking the given drug in pill form and times for the pills to be dissolved were measured. State assumptions of the test.
I. The subjects must be part of a medical study group investigating the drug.
II. The subjects in the sample must be randomly selected from a population.
III. The sample data must come from a normally distributed population of observations for the variable under study.
A)I only
B)II only
C)III only
D)II and III
E)None of these

Question

Quizplus · Accepted Answer

The correct assumptions for the test include that the subjects in the sample must be randomly selected from a population (to ensure representativeness) and that the sample data must come from a normally distributed population of observations for the variable under study (a common assumption for many statistical tests, especially when dealing with means). Being part of a medical study group is not a necessary assumption for the statistical test itself, although it might be relevant for other aspects of research design.

A Pharmaceutical Company Wants to Answer the Question Whether It