A company routinely audits its customer data entry and corrects any errors that the audits identify. The number of errors identified each follows a Normal with distribution with mean 4 = 18.3 and standard deviation o = 1.9. a) Use the 68-95-99.7 Rule to give a range of values that covers the number of errors found in about 95% of the months. b) What proportion of months do the audits identify fewer than 18 errors