In the failure rate model shown below, which one of the sections represents the period when catastrophic failures are likely to occur?

What is the lower control limit for proportion defective if the average daily production is 5000 units and the average fraction defective is 0.02?

The equation below represents the:

Periodically, a sample of 20 items are randomly selected from a population that is normally distributed, the average is computed, and plotted. Which of the following statements is correct?
. The average of the logarithms of the values is lognormally distributed.
. The standard deviation of the averages is equal to the standard deviation of the individuals divided by the square root of 20.
. The variance of the averages is equal to the variance of the individuals divided by the square root of 20.

What are the major disadvantages of having an improvement team that is too large?
I. Difficulty in having constructive input from the entire group.
II. Difficulty in arriving at consensus.
III. Difficulty in finding large meeting facilities.
IV. Difficulty, on the part of the recorder, in keeping up with more paperwork.