Questions from Total Quality Management

Q: What are some reasons for a process to go out of control

What are some reasons for a process to go out of control due to a sudden shift in the level?

Q: Consider Table 5-15 on the summary of patient satisfaction ratings

Consider Table 5-15 on the summary of patient satisfaction ratings. The percentages in each rating category are based on a response from a total of 200 patients from a prior year. For the item waiting...

Q: Summary data on ratings of patient satisfaction and importance for the survey

Summary data on ratings of patient satisfaction and importance for the survey item “waiting time prior to being seen by a physician” is shown in Table 5-16 for a to...

Q: The Small Business Administration (SBA) wishes to estimate the mean

The Small Business Administration (SBA) wishes to estimate the mean annual sales of companies that employ fewer than 20 persons. Historical data suggest that the standard deviation of annual sales of...

Q: A company’s quality manager wants to estimate, with a probability of

A company’s quality manager wants to estimate, with a probability of 0.90, the copper content in a mixture to within 4%. (a) How many samples must be selected if no prior information is available on t...

Q: The personnel manager wants to determine if there is a difference in

The personnel manager wants to determine if there is a difference in the average time lost due to absenteeism between two plants. From historical data, the estimated standard deviations of lost time a...

Q: By incorporating certain process improvement methods, a company believes that it

By incorporating certain process improvement methods, a company believes that it has reduced the proportion of nonconforming product and wishes to test this belief. (a) If the operations manager selec...

Q: The production of nonconforming items is of critical concern because it increases

The production of nonconforming items is of critical concern because it increases costs and reduces productivity. Identifying the causes behind the production of unacceptable items and taking remedial...

Q: Management is exploring the possibility of adding more agents at the check

Management is exploring the possibility of adding more agents at the check-in counter of an airline to reduce the waiting time of customers. Based on available information, the standard deviation of t...

Q: It is desired to estimate the average consumer spending on durable goods

It is desired to estimate the average consumer spending on durable goods, annually, in a defined geographical region. Spending patterns are influenced by disposable income. Based on county tax records...