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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 O B. - Increasing the sample size by a factor M results in the margin of error decreasing by a factor of 2 M O c. 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