Answer:
No; the study is based on a volunteer sample, which may be very different from a randomly selected one.
Explanation
Her plan cannot be effective because she could base her own judgenent on samples that was randomly selected for consideration.
If this is true or false question. It is False.
You need to call your manager about your health when you have dark tea colored urine and yellowing skin. The food that you ate may be a cause of your allergy that can lead to a serious problem that can cause to a change to your skin color and urine.
Nodding your head is a way to show you are agreeing, but no verbal communication occurs
