A supplier knowingly places 4 defective bearings in a shipment of 30 bearings.  At receiving inspection, the customer selects 8 bearings at random for inspection.  What is the probability that exactly 2 defective bearings will be in the inspection sample?

A process characteristic follows a normal distribution with a mean of 25.15 and standard deviation of 0.9.  The spec limits for the characteristic are 25.00 +/- 1.5.   If a sample of 9 parts are taken from the process, what is the probability that there will be no parts out of spec in the sample?

A run chart is used to

Which of the following is not true of cause and effect analysis?

A process characteristic follows a normal distribution with a mean of 25.15 and standard deviation of 0.9.  The spec limits for the characteristic are 25.00 +/- 1.5.   If a sample of 9 parts are taken from the process, what is the probability that there will be no parts out of spec in the sample?

If a process is adjusted based on a single sample or data point without regard for common cause variation, this would be known as

Which of the following is not true of cause and effect analysis?

A bottle of liquid hand soap indicates that it contains 8 oz.  In the process of filling the bottles, it is known that 3% of the bottles are under-filled and do not contain the full 8 oz.  If 5 bottles are randomly selected from the process, what is the probability that none of the bottles are under-filled?

A supplier knowingly places 5 defective circuit boards in a shipment of 25 boards.  At receiving inspection, the customer selects 8 boards at random for inspection.  What is the probability that exactly 2 defective boards will be in the inspection sample?

The number of cycles to failure for a system follows a lognormal distribution with parameters µ= 12 and σ = 3.  What is the probability that the system will fail in less than 150 cycles?