The first edition hardcover of a new book by a popular writer has a demand which is normally distributed with an expected value of 1.5 million and a standard deviation of 600k. The production and transportation costs per hardcover are $10, and the sale price in bookstores is $25. When the paperback version comes out, the hardcover books go on sale for $5. How many hardcovers should be produced? Hint: Find C and C, and then use the graph from a previous problem to find the z-score. Then add z'sigma to the expected demand. 400 thousand 1.67 million. 1.9 million 1.4 million D Question 4 In the hardcover books problem, what is the service level inferred by the solution? 95% 67% 75% 90% 1 pts