The specifications on an electronic component in a target-acquisition system are that its life must be between 5,000 and 10,000 h. The life is normally distributed with mean 7,500 h. The manufacturer realized a price of $10 per unit produced; however, defective units must be replaced at a cost of $5 to the manufacturer. Two different manufacturing processes can be used, both of which have the same mean life. However, the standard deviation of life for process 1 is 1000h, whereas for process 2 it is only 500h. Production costs for process 2 are twice those for process 1. What value of production costs will determine the selection between processes 1 and 2?
Answer to relevant QuestionsThe tensile strength of fiber used in manufacturing cloth is of interest to the purchaser. Previous experience indicates that the standard deviation of tensile strength is 2 psi. A random sample of eight fiber specimens is ...Waiting times for customers in an airline reservation system are (in seconds) 953,955, 948, 951,957,949, 954, 950, 959. a. Calculate the sample average. b. Calculate the sample standard deviation. A random sample of 200 printed circuit boards contains 18 defective or nonconforming units. Estimate the process fraction nonconforming. Using a 90% two-sided confidence interval, evaluate whether or not it is possible that ...The diameter of a metal rod is measured by 12 inspectors, each using both a micrometer caliper and a vernier caliper. The results are shown in Table 4E.5. Is there a difference between the mean measurements produced by the ...Construct and interpret a normal probability plot of the volumes in Exercise 4.1.
Post your question