Each day for two workweeks (10 days total), George weighs 4 bags from that day’s production. If the average of the means is 14 o

Question

3 years ago

10

Each day for two workweeks (10 days total), George weighs 4 bags from that day’s production. If the average of the means is 14 o

z. and the average range is 0.4 oz., what is the lower control limit for an x-bar chart for this process?
a. 13.7084 oz.

b. 13.8768 oz.

c. 14.2916 oz.

d. 12.8000 oz.

e. 13.5908 oz.

Mathematics

1 answer:

alina1380 [7] · Answer 1 · 2022-03-17T01:57:43+03:00

alina1380 [7]3 years ago

7 0

Answer:

a. 13.7084 oz.

Step-by-step explanation:

Formula for Lower Control Limit =

(LCL = x-bar - A²R-bar)

x - bar = 14 oz

A2 = 0.729

R - bar = 0.4 oz

= 14 - 0.729 × 0.4

= 14 - 0.2916

= 13.7084oz