After Conducting a Survey, a Researcher Wishes to Cut the Standard

Multiple Choice

After conducting a survey, a researcher wishes to cut the standard error (and thus the marginof error) to of its original value.How will the necessary sample size change?

A) It will decrease by a factor of 3.
B) It will increase by a factor of 3.
C) It will decrease by a factor of 9.
D) It will increase by a factor of 9.
E) Not enough information is given.