Dr. Cyril conducts a simple random sample of 500 men who became fathers for the first time in the past year. He finds that 23% of them report being unsure of their ability to be good fathers, plus or minus 4%. If Dr. Cyril increased his sample size to 1,000, which of the following would happen?
A)The true estimate would increase.
B)The margin of error would become smaller.
C)External validity would become less important.
D)Statistical validity would become negatively affected.

Question

Quizplus · Accepted Answer

Increasing the sample size would decrease the margin of error, resulting in a more precise estimate of the population parameter. The true estimate may or may not change, and the terms "external validity" or "statistical validity" are not applicable to this scenario.

Dr Cyril Conducts a Simple Random Sample of 500 Men