Questions from Total Quality Management

Q: A cereal manufacturer who claims to meet certain mineral and vitamin requirements

A cereal manufacturer who claims to meet certain mineral and vitamin requirements has a minimum specification of 25% for the iron content. The standard deviation of the iron content is estimated to be...

Q: Four components A, B, C, and D are placed

Four components A, B, C, and D are placed in parallel to make a subassembly in a circuit board. The reliabilities of A, B, C, and D are 0.93, 0.88, 0.95, and 0.92, respectively. Find the reliability o...

Q: Refer to Exercise 11-10. Each component has a time

Refer to Exercise 11-10. Each component has a time to failure that is exponentially distributed, with a mean time to failure of 3000 hours. Find the reliability of the subassembly for 2500 hours of op...

Q: Consider the seven-component system shown in Figure 11-14

Consider the seven-component system shown in Figure 11-14. The reliabilities of the components are as follows: RA = 0.96, RB= 0.92, RC=0.94, RD = 0.89, RE = 0.95, RF=0.88, RG =0.90. Find the reliabili...

Q: Consider the seven-component system shown in Figure 11-14

Consider the seven-component system shown in Figure 11-14. Assume that the time to failure for each component has an exponential distribution. The failure rates are as follows: λA = 0.000...

Q: A standby system has a basic unit with four standby components.

A standby system has a basic unit with four standby components. The time to failure of each component has an exponential distribution with a failure rate of 0.008/hour. For a 400-hour operation period...

Q: State the null and alternative hypotheses in the following situations by defining

State the null and alternative hypotheses in the following situations by defining the parameters used. Also, state any assumptions that you need to make to conduct the test: (a) The Postal Service wis...

Q: Refer to Exercise 11-13 and the system shown in Figure

Refer to Exercise 11-13 and the system shown in Figure 11-14. Suppose that component B is a standby component. Find the reliability of the system after 1000 hours. What is the mean time to failure? D...

Q: Construct the OC curve for the life testing plan n= 6

Construct the OC curve for the life testing plan n= 6, T =900 hours, c =3. For a producer’s risk of 0.05, what is the associated quality of batches as indicated by their mean life? For a consumer’s ri...

Q: A sample of 20 diodes is chosen for life testing. The

A sample of 20 diodes is chosen for life testing. The time to failure of the diodes is exponentially distributed. The test is terminated after six failures, with no replacement of the failed items. Th...