Pack-and-Move conducted a study that showed 98% customer satisfaction, with a standard deviation of 1%. The sample included 25 people who
appeared in one of their commercials, during the past 5 years.
Move-Em-Out conducted a study that showed 92% customer satisfaction,
with a standard deviation of 3%. The random sample consisted of 100 people,
who had recently hired the moving company.
Which of the company claims is more believable and why?
O A. Pack-and-Move because the time span was longer.
O B. Move-Em-Out because the standard deviation is larger.
C. Move-Em-Out because the sample was not biased.
D. Pack-and-Move because the standard deviation is smaller.