Question
A company produces 8-pound bags of rice. As shown below, it gathered five samples with six bags in each sample for quality control purposes. The
A company produces 8-pound bags of rice. As shown below, it gathered five samples with six bags in each sample for quality control purposes. The weights of each of the bags are listed below.
| Sample | 1 | 2 | 3 | 4 | 5 | 6 |
| 1 | 7.98 | 8.34 | 8.02 | 7.94 | 8.44 | 7.68 |
| 2 | 8.33 | 8.22 | 8.08 | 8.51 | 8.41 | 8.28 |
| 3 | 7.89 | 7.77 | 7.91 | 8.04 | 8.00 | 7.89 |
| 4 | 8.24 | 8.18 | 7.83 | 8.05 | 7.90 | 8.16 |
| 5 | 7.87 | 8.13 | 7.92 | 7.99 | 8.10 | 7.81 |
a. Find the x-bar and R for each of the five samples
b. find the x-bar and r-bar.
c. Find the 3 sigma UCL and LCL for the mean and range charts.
d. Plot the data. Does the process look to be in statistical control? Why or why not?
Step by Step Solution
There are 3 Steps involved in it
Step: 1
Get Instant Access to Expert-Tailored Solutions
See step-by-step solutions with expert insights and AI powered tools for academic success
Step: 2
Step: 3
Ace Your Homework with AI
Get the answers you need in no time with our AI-driven, step-by-step assistance
Get Started
Introductory Statistics Exploring The World Through Data
Authors: Robert Gould, Colleen Ryan
2nd Edition
9780321978509, 321978277, 321978501, 978-0321978271
