Expression for the proportion of components
If component lifetime is exponentially distributed with parameter lambda, obtain an expression for the proportion of components whose lifetime exceeds the mean value by more than 1 standard deviation.
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Assume that X is a binomial random variable with n = 30 and p = 0.72. Calculate the following probabilities. (Round your intermediate and final answers to 4 decimal places.)
A study of on-time performance for an airline shows that 20% of their flights take off late. Seventy percent of flights that take off late are late in arriving at their destination, while only 10% of flights that take off on time are late at their
A quality control inspector will sample products obtained from a manufacturing process until two noncomforing products are found. Suppose that the process produces noncoforming products 10% of the time.
The Kenmont Carbide Company has two machines that produce a certain product. Machine 1 produces 40% of the product, and machine 2 produces 60%. Machine 1 produces 3% defective products and machine 2 produces 5% defective products. What is the pro
One test that people who wish to donate blood must undergo is a test of iron level. Individuals with insuficient iron levels are not permitted to donate blood.
The number of power surges at a nuclear plant follows a Poisson distribution with an average of .5 power surgers per day.
Many project managers use critical path analysis to minimize slack time in projects and ensure tasks are completed in a timely manner. Briefly discuss what is meant by critical path analysis. What are critical path activities and why are they impo
A gambler has a fair coin (with one head and one tail) and a two-headed coin. He selects one of the coins at random, and when he flips it, it shows heads. Suppose that he flips the same coin a second time and again it shows heads. Then he flips th
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