In a process control study, the overall process average over 15 samples is 63.45 with an average corresponding range of 5.6. What is the lower control limit of the R-chart

Step-by-step explanation:

From the question we are told that:

Sample size

Mean

Range

Generally at

Value of Control chart constant,

Generally the equation for Lower Control Limit is mathematically given by

choice b is correct

step-by-step explanation:

we have been given the following system of inequalities;

we are required to graph the solution to the system of inequalities. using a graphing tool, the graph of the system is as shown in the attachment. the continuous line represents the graph of while the dotted line represents .

no solution

step-by-step explanation:

there is not enough information in the problem to solve.