how many times does the sample size have to be increased to decrease the margin of error by a factor of 1 7? The sample size must be increased by a factor of 4949 to decrease the margin of error by a factor of 1 7. (Type a whole number.) What is the general relationship, if any, between the sample size and the margin of error? A. Increasing the sample size by a factor M results in the margin of error decreasing by a factor of 1 M. B. Increasing the sample size by a factor M results in the margin of error decreasing by a factor of 1 M2. C. Increasing the sample size by a factor M results in the margin of error decreasing by a factor of 1 M. D. There is no relationship between the sample size and the margin of error