The J\&B Card Shop sells calendars featuring a different colonial picture for each month. The once-a-year order for each year's calendar arrives in September. From past experience the September-to-July demand for the calendars can be approximated by a normal distribution with =300 and standard deviation =20. The calendars cost $6.50 each, and J\&B sells them for $15 each. Use the Single Period Inventory Excel template in MindTap to answer the following: a. Suppose that J&B throws out all unsold caler dars at the end of July. How many calendars should be ordered? b. If J\&B sells any surplus calendars for $1 at the end of July and can sell all of them at this price, how many calendars should be ordered