During shipment testing, product was flown from Indianapolis to Seattle and back again to simulate 4 takeoffs and landings which can cause cans to open due to pressure changes. Prototype units of the 100 were shipped and 15 opened. Using a 90% two-sided confidence interval, determine if it is possible that the average failure rate is 11%.
Answer to relevant QuestionsContinuation of Exercise 4.38. The company has made improvements and has repeated the experiment. In this iteration, 12 opened. Using a 95% two-sided confidence interval on the difference in proportions, is it possible to ...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 ...The time to failure in hours of an electronic component subjected to an accelerated life test is shown in Table 4E.1. To accelerate the failure test, the units were tested at an elevated temperature (read down, then across). ...Consider the control chart shown here. Does the pattern appear random? b. Estimate the process standard deviation. c. What are the limits that you would expect to contain nearly all the process measurements?
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