d. 1 and 100 6 The numerical value of the variance a. is always larger than the numerical value of the standard deviation b. is always smaller than the numerical value of the standard deviation c. is negative if the mean is negative d. can be larger or smaller than the numerical value of the standard deviation 7. The standard deviation of a sample was reported to be 20. The report indicated that 7200. What has been the sample size? a. 16 b. 17 C. 18 d. 19