Jada’s supervisor asks her to create and administer a well-designed and well-conducted survey to her company’s employees about their satisfaction with the company’s health-care and benefits plan. Jada should do which of these to ensure that her survey is well-designed and well-conducted? I. Jada needs to make sure that survey questions do not follow a pattern.
II. Jada should use a systematic random sampling technique to reduce standard error.
III. Jada should survey at least 30 individuals to draw valid conclusions when conducting the survey.
IV. Jada should use simple language throughout the survey.

I only

II only

I and II only

I, II, III, and IV