2 We are trying to determine the number of labor hours required to produce a unit of a product. We are given the information in Table 21 (file Learn.xls). For example, the 2nd unit produced required 517 labor hours, and the 600th unit produced required 34 labor hours.

a Try to determine a relationship between the number of units already produced and the labor hours needed to produce the next unit. Why is this relationship called the learning curve?

b How many labor hours would be needed to produce the 800th unit?

c We are 95% sure that the prediction in part

(b) is accurate within _____ hours.