Problem 45-16 An office manager has received a report from a consultant that includes a section on equipment replacement. The report indicates that scanners have a service life that is normally distributed with a mean of 51 months and a standard deviation of 6 months. On the basis of this information, determine the proportion of scanners that can be expected to fail in the following time periods: Use Table A and Table B. a. Before 44 months of service. (Round z values to 2 decimal places, probability calculations to 4 decimal places and your final answer to 4 decimal places.) T Proportion of scanners