Which of the following is true of a p-chart?
a. the lower control limit is the same as the lot tolerance percent defective.
b. the lower control limit equals d3 times p-bar.
c. the lower control limit is found by subtracting a fraction from the average number of defects.
d. the lower control limit may be at zero.
e. the lower control limit indicates the minimum acceptable number of defects.

Suppose you are an avid reader and are looking to save money on the cost of books instead of paying about $20 for each book, you decide to look into purchasing a kindle for $120 you can purchase e-books for about $5 each 1. find the slope-intercept equation for the cost of the hard copy of books using x to represent the number of books 2. find the slope-intercept equation for the cost of the kindle with cost of e-books using x to represent the number of books