Questions from Total Quality Management

Q: The pH values of a dye for 30 samples taken consecutively over

The pH values of a dye for 30 samples taken consecutively over time are listed row wise: (a) Can we conclude that the sequence of pH values over time is non-random? Use α = 0.05. (b) Ass...

Q: Percentage investment in new-product development is monitored for a pharmaceutical

Percentage investment in new-product development is monitored for a pharmaceutical company by quarter. The observations are listed row wise: (a) Can we conclude that the sequence of investment percent...

Q: An automobile manufacturing company is attempting to cope with rising health care

An automobile manufacturing company is attempting to cope with rising health care costs of its employees. It offers three types of plans. Based on a random sample of 200 employees selected last year,...

Q: Based on historical data, it is estimated that 12% of

Based on historical data, it is estimated that 12% of new products will obtain a profitable market share. However, if two products are newly introduced in the same year, there is only a 5% chance of b...

Q: Explain the relationship between a type I error, power, degree

Explain the relationship between a type I error, power, degree of difference that one wishes to detect in a parameter value, and sample size. How can a type I error be reduced and the power be increas...

Q: An assemble-to-order hardware company has two types of

An assemble-to-order hardware company has two types of central processing units (CPUs), C1 and C2, and two types of display monitors, M1 and M2. Unit C2 is slightly more complex than C1, as is M2 comp...

Q: The settling of unwanted material in a mold is causing some defects

The settling of unwanted material in a mold is causing some defects in the output. Based on recent data, it is estimated that 5% of the output has one or more defects. In spot checking some parts, an...

Q: Consider the hardware company in Exercise 1-15. The company

Consider the hardware company in Exercise 1-15. The company is contemplating outsourcing of its complex monitor M2. Assume that all other information remains as given in Exercise 1-15. Information fro...

Q: A pharmaceutical company has obtained the following cost information (per 1000

A pharmaceutical company has obtained the following cost information (per 1000 tablets) based on the production of a drug in the past year: material, $150; direct labor, $100; energy, $50; overhead, 4...

Q: The following data (in $/m^3) were obtained

The following data (in $/m^3) were obtained from a company that makes insulation for commercial buildings: direct labor, 20; direct materials, 30; indirect labor and materials, 30% of direct labor; fi...