An office manager has recelved 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 41 months and a standard deviation of 4 months. On the bosis of this informotion, determine the proportion of scanners that can be expected to fall in the following time periods Use Table A and Table B a. Before 38 months of service, (Round z values to 2 decimal places, probability calculations to 4 decimal piaces and your final answer to 4 decimal places.) b. Between 40 and 45 months of service. (Round z values to 2 decimal places, probability calculations to 4 decimal places and your final answer to 4 decimal places.) c. Within \pm 2 months of the mean life. (Round z values to 2 decimal places, prhoability calculations to 4 decimal places and your final onswer to 4 decimol places.) Tahle A Areas under the normal curve, 0 to z able B Areas under the andardeed normal tve, from x to -2