By how many times does the sample size have to be increased to decrease the margin of error by a factor of = ? The sample size must be increased by a factor of to decrease the margin of error by a factor of (Type a whole number) What is the general relationship, if any, between the sample size and the margin of error? O A. Increasing the sample size by a factor M results in the margin of error decreasing by a factor of M O B. Increasing the sample size by a factor M results in the margin of error decreasing by a factor of M2 OC. Increasing the sample size by a factor M results in the margin of error decreasing by a factor of VM O D. There is no relationship between the sample size and the margin of error