Question: Sampling 9 boxes per every hour for the past 8 hours has produced the following results: WEIGHT OF SAMPLE WEIGHT OF SAMPLE HOUR (AVG. OF

Sampling 9 boxes per every hour for the past 8 hours has produced the following results:

WEIGHT OF SAMPLE

WEIGHT OF SAMPLE

HOUR

(AVG. OF 9 BOXES)

HOUR

(AVG. OF 9 BOXES)

1

16.1

5

16.3

2

14.1

6

13.8

3

15.5

7

14.2

4

18.4

8

17.3

a) What is the value of X double-bar?

b) Develop X-bar Chart. In this case, sigma is 1.1. Determine UCL and LCL.

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