You are a newsvendor selling the San Pedro Times every morning. Before you get to work, you go to the printer and buy the day's paper for $0.25 a copy. You sell a copy of the San Pedro Times for $1.25. Daily demand is distributed normally with mean =255 and standard deviation =51. At the end of each morning, any leftover copies are worthless and they go to a recycle bin. a. How many copies of the San Pedro Times should you buy each morning? Note: Use Excel's NORM.S.INV() function to find the z value. Round your z value and service level to 2 decimal places and final answer to the nearest whole number. b. Based on a, what is the probability that you will run out of stock? Note: Round your answer to the nearest whole percent