Question

Question 1 1 pts EXTRA CREDIT: A researcher proposes a study to see whether a lower dose of flu vaccine is as effective as the standard higher dose in protecting against the flu. In this study, patients will be divided into two treatment groups. One group will be treated with all the wall amount of the vaccine, while the other group will be treated with the usual amount. The response will be measured by looking at the production of antibodies. Choose the statement below that is not a requirement for this study to support a cause-and-effect conclusion A. Patients should be randomly assigned to the lower and higher dose groups. - B. Each sample size should be at least 500. . C. The study should be double-blind. - D. None of the first three statements are requirements, the study, as described, is sufficient to support a cause-and-effect conchu

Answer 1

Here, we can discuss it as per the options.

Option A - Patients should be randomly assigned, this is a requirement for any experiment to be effective. It is required for this experiment to happen.

Option B - There is no such barrier which says the sample size for each group should be at least 500. It can be any number according to the whole population. This is not a requirement.

Option C - A double-blind study means neither the participants nor the experimenters know who is receiving a particular treatment. This is a requirement here.

Option D - Option B is clearly our answer.

Option B is the right answer.