PROBLEM #3
Mr. JL Cruz was the quality control inspector of Interdrug Pharmaceutical incorporation. He
inspected 5 sample bottles and the following data was obtained:
Time
Bottle 1 Bottle 2 Bottle 3 Bottle 4
7:00
15.85
16.02
15.83
15.93
9:00
16.12
16.00
15.85
16.01
11:00
15.75
15.85
15.74
15.93
1:00
16.20
15.86
16.21
16.10
a. What are the average mean and the average range?
b. What is the center line of the mean bar chart?
c. What are the UCL and LCL of both mean and range?
d. Is there any bottle that doesn’t conform within the specification?