A p-chart for this manufacturing process

Reference no: EM131111136

A company that manufactures plastic molded parts believes it is producing an unusually large number of defects. To investigate this suspicion, each shift drew seven random samples of 200 parts, visually inspected each part to determine whether it was defective, and tallied the primary type of defect present (Hart, 1992). These data are presented in the table below.

a. From a statistical perspective, are the number of samples and the sample size of 200 adequate for constructing a p-chart for these data? Explain

b. Construct a p-chart for this manufacturing process.

c. Should the control limits be used to monitor future process output? Explain

d. Suggest a strategy for identifying the special causes of variation that may be present

Reference no: EM131111136

Questions Cloud

Textbooks in two markets : Assume you inherit 40 copies of the textbook for ECON 3125. You plan to sell these textbooks in two markets: directly to students on campus, and sell them online on ebay.

Construct an r-chart for the nursing care process : A hospital has used control charts continuously since 1978 to monitor the quality of its nursing care. A set of 363 scoring criteria, or standards, are applied at critical points in the patients' stay to determine whether the patients are rece..

What will the equilibrium price : (a) What will the equilibrium price be? (b) What will the equilibrium output for each firm be? (c) What will profit or loss be per unit?

What is the value of the lower-right entry : what is the value of the lower-right entry in the reflection matrix and what is the gradient of the eigenline that corresponds to eigenvalue h?

A p-chart for this manufacturing process : A company that manufactures plastic molded parts believes it is producing an unusually large number of defects. To investigate this suspicion, each shift drew seven random samples of 200 parts, visually inspected each part to determine whether it ..

Regression results estimating game attendance : Compute estimated attendance for a Sunday game, during week 3, with an average ticket price of $40, if the team's winning percentage is 100%.

The inverse demand function : Q1. There are two firms (firm 1 and 2) competing in quantity. Firm 1 and 2 set their quantities supplied, q1 and q2, respectively. The production costs are zero.

Consumers with different reservation price : Explain why a monopoly that is perfectly able to discriminate between its customers and charge them the individual price it wants is Pareto-efficient, unlike a monopoly that can only charge a single price to consumers with different reservation pr..

How these types of negotiation are used in business world : Describe two-party, coalitions, and multi-party negotiations. Within your description, include a real-life example of how these types of negotiation are used in the business world.

User Account

All Pages