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Complete solution correct answer key A manufacturer of disk drives for notebook computers wants a MTBF of at least 50,000 hours. Recent test results for 10 units were one failure at 10,000 hrs, another at 25,000 hrs, and two more at 45,000 hrs. The remaining units were still running at 60,000 hours. Determine the following: Percentage of Failures? Number of failures per unit hour? MTBF at this point in testing?
Is the threat of being shot by a hunter. Hazards associated with hunters. Then why is hunting allowed? Suits in the deep woods?
You want to know how the commuting time of your employees compare to Departments competing for the same staff, so you get some survey data on average commuting times for36 randomly selected people in your line of business.
suppose that the probability that a child living in an urban area is the us is obese is 20. a social worker sees 15
lifetime of a motherboard is modeled by a gamma distribution with parameters r80 and gamma 4 years-1. compute the
Heights of men on a baseball team has a bell-shape distribution with a means of 173 cm and a standard deviation of 9 cm. Using the empirical, rule what is the approximate percentage of the men between the following values?
suppose that 4 candidates run for the governor of a state. how many ways are there in which the numbers of their
a what are the control limits for x-bar control charts with alpha 0.002 probability limit and sample size of 4?b
Researchers designed a questionnaire to identify compulsive buyers. For a sample of consumers who identified themselves as compulsive buyers, scores have a mean of 0.83 and a standard deviation of 0.24.
Average time it takes males to complete a baccalaureate degree in the California public university system. Using the summary data below from the two samples, compute the value of the test statistic t*.
Fishing Northern Pike. Athabasca Fishing Lodge is located on Lake Athabasca in northern Canada. In one of its recent brochures, the lodge advertises that 75% of its guests catch northern pike over 20 pounds.
how well do exams given during the semester predict perfomance on the final? one class had 3 tests during the semester.
A simple random sample of 100 of a certain popular model car in 2003 found that 20 had a certain minor defect in the brakes. A simple random sample of 400 of this model car in 2004 found that 50 had the minor defect in the brakes.
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