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Refer to given Exercise. Assume that failed items are immediately replaced during the test. Using Handbook H-108, what is your recommendation on the lot?
Exercise A life testing plan is to be terminated after the eighth failure. It should reject a lot that has an acceptable mean life of 900 hours with a probability of 0.10. Items that fail during the test are not replaced.
A sample of 15 items is placed on test with the eight failures occurring at the following times (in hours): 400, 430, 435, 460, 460, 490, 520, 530. Based on Handbook H-108, should the lot be accepted?
a study looks at patients who were mechanically ventilated in the intensive care unit. the researchers found that of
A researcher wants to estimate the average weight loss obtained by patients at a residential weight-loss clinic during the first week of a controlled diet and exercise regimen. How large a sample is needed to estimate this mean to within 0.5 lb wi..
the time it takes a printer to print a job is an exponential random variable with the expectation of 12 seconds. you
Construct a 90% con?dence interval for the difference between the population mean salaries. Assume that the salaries of male and female professors are both normally distributed with equal standard deviations. Interpret the result.
What is the probability that 11 or more of these consumers have called an 800 or 900 telephone number for information about some product?
if you want to be 95 confident of estimating the population mean to within a sampling error of plus or minus 6 and the
Determine the optimum mix of products in terms of maximizing contributions to profits for the next period. Show all work.
Perception of Time- Randomly selected statistics students of the author participated in and experiment to test their ability to determine when 1 min(or 60 seconds) has passed.
1. identify a commonly used graphical technique for portraying events and relationships among events.2. what does it
I want it to be analysed with descriptive statistics, means/medians of variables and chi-square analysis. Interpretations of the results, their links or interesting points among the results must be explain clearly.
compute the hazard rate function of x when x is uniformly distributed over 0
During a professor's office hours, students arrive, on average, every ten minutes. Assume that the distribution of the time between arrivals follows an exponential distribution. Suppose that a student has just left.
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