A Manufacturing Process Produces Computer Chips in Batches of 100

Multiple Choice

A manufacturing process produces computer chips in batches of 100.The firm believes that the percent of defective computer chips is 2%.If in five batches the percent defective were 3%,8%,1%,2%,and 7%,how many of these fell outside of the upper or lower control limits for the proportion of defective computer chips in a batch?

A) 0
B) 1
C) 2
D) 3