A lot is known to be 1.2% defective. Five units are randomly selected from the lot, and the lot is accepted if 1 or fewer defects are found. What is the probability of the lot being rejected?
You have been asked to sample a lot of 500 units from vendor whose past quality has been about 2% defective. A sample of 40 pieces is drawn from the lot and you have been told to reject the lot if you find two or more parts defective. What is the probability of finding two or more parts defective?
Which of the following statements BEST describes a bimodal distribution?
A process is in control with a defect rate of 0.2%. A sampling plans calls for 30 items to be selected at random, and for the process to be shut down and corrected if any defects are found. How often will the process be shut down without a change in the defect rate?
If a distribution is skewed to the right
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?
A "p" chart
The steeper the OC-curve, the
The Dodge-Romig tables are designed to minimize which of the following parameters?
In order to implement a continuous improvement strategy, a company may institute a steering committee or improvement council. Which of the following would generally NOT be a task performed by this council?
During the performance of an audit, which of the following are key considerations?
Ⅰ. What sampling plans may be necessary?
Ⅱ. Is the audit schedule progressing as planned?
Ⅲ. Is there a need for a technical specialist?
Ⅳ. Is the level of compliance satisfactory?
Which of the following is NOT considered a prevention cost?
What is the standard deviation of the values below?
4.5, 5.1, 6.2, 2.1, 3.9
Which of the following actions or techniques is MOST useful in determining the original fundamental cause of a product or process nonconformance?
Which of the following is the BEST statement to make regarding the relationship between product precision and product production?
You are requested by top management to establish an audit program of the quality systems in each branch plant of your firm. Which of the following schemes would you use in selecting the audit team to optimize continuity, direction, availability, and technology transfer?
An X-bar and R chart was prepared for an operation using twenty samples with five pieces in each sample; X-bar was found to be 33.6 and R-bar was 6.20. During production, a sample of five was taken and the pieces measured 36, 43, 37, 25, and 38. At the time, this sample was taken:
Given the data below, what is the 90% confidence interval for the variance?
22, 23, 19, 17, 29, 25
An experiment with two factors, in which all levels of one variable are run at each level of the second variable, is called a
The weight of paint cans is considered
One-way analysis of variance is MOST similar in its objectives to
Which of the following are the MOST logical reasons for providing source inspection?
Ⅰ. The supplier has consistently shown poor out-going quality.
Ⅱ. The key inspection points are hidden after assembly at the suppliers' plant.
Ⅲ. The supplier requests the inspection to save them potential shipping expenses.
Ⅳ. The criticality of the product warrants it.
Normally, complaint data for both a product or service organization should provide
A cause and effect diagram is also called which of the following?