a$)$ Establish $30$ upper and lower control Imits. Five data entry operators work at the data processing department of the Birmingham Bank. Each day for $30$ days, the number of defective records in a sample of $350$ records typed by these operators has been noted, as follows:

$\backslash$table$[[\backslash$table$[[$Sample$],[$No$.]],\backslash$table$[[$No$.],[$Defectives$]],\backslash$table$[[$Sample$],[$No$.]],\backslash$table$[[$No$.],[$Defectives$]],\backslash$table$[[$Sample$],[$No$.]],\backslash$table$[[$No$.],[$Defectives$]]],[1,8,11,7,21,17],[2,4,12,5,22,13],[3,20,13,15,23,6],[4,11,14,3,24,8],[5,12,15,12,25,14],[6,7,16,7,26,9],[7,12,17,13,27,14],[8,9,18,5,28,5],[9,6,19,18,29,11],[10,14,20,16,30,3]]$

LCL ${?}_D=($onfir your rosponse as a number botwoon $0$ and $1,$ roundod to three dobimal pracos$).$

b$)$ Why can the lower conirol imit not be s negstive number?

A$.$ Since the upper control Emil cannet be a negelive rumber.

B$.$ Since the upper control Imit is positive.

C$.$ Since the percent ol defeclive recoeds is aleays a positive number.

D$.$ Since the percent of defective mooeds camot be a negative number.

c$)$ The industry standard for the upper control limit is $0\mathrm{.}10.$ What does this imgly about Bimingham Bank's own sondards?

The industry smindard is

the atonsord at Biminghom Bank.