Question

To determine if their 2.50 centimeter industrial belts are properly adjusted, reeves inc. has decided to use a ___-chart which uses the range to estimate the variability in the sample. Which option completes the question?

1) x
2) r
3) s
4) z

Answer 1

To check the adjustment of their industrial belts, Reeves Inc. will use an R-chart (option 2), which helps estimate the sample variability by using the range between the smallest and largest measurements.

Step-by-step explanation:

To determine if their 2.50 centimeter industrial belts are properly adjusted, Reeves Inc. has decided to use an R-chart, which uses the range to estimate the variability in the sample. The correct option to complete the question is 2) R. An R-chart is a type of control chart used to monitor the variability of processes in industrial settings.

An X-bar chart is commonly used in conjunction with the R-chart, where the X-bar chart monitors the process mean and the R-chart monitors the process variability. If the range, or the difference between the smallest and largest measurements in the sample, is within the control limits on the R-chart, the process is considered to be in control with regard to variability.