Cost of Poor Quality (COPQ) is the cost associated with providing poor quality products or services to the customer.
We use confidence intervals to determine the degree of certainty that the sample group accurately represents the entire population.
A Paired T Distribution, Paired T-Test, Paired Comparison test, and Paired Sample Test compares the mean & standard deviation of two groups.
One Sample T Hypothesis Test (Student’s T Test) are used to resolve hypothesis tests around comparing process means ( sample size to be <30)
The exponential distribution is a widely used continuous distribution. It estimates the lapse of time between the independent events.