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In designing a new space vehicle, NASA needs to decide whether to provide 0, 1 or 2 backup systems for a critical component of the vehicle. The first backup system, if included, comes into use only if the original system fails. The second backup system, if included, comes into use only if the original system and the first backup system both fail. NASA engineers claim that each system, independent of the others, has a 5% chance of failing if called into use. Each backup system costs $35,000 to produce and install within the vehicle. Once the vehicle is in flight, the mission will be scrubbed (ended early) only if the original system and all backups fail. The cost of a scrubbed mission, in addition to production costs, is assessed to be $10,000,000.
How many backup systems are needed to minimize NASA's expected total cost?
For a sample of n 4 weeks in which the daily temperature was extremely hot, the weekly average of hit-by-pitch players was M 15.5. Are players more likely to get hit by pitches during hot weeks?
question on awards day at the end of the year jasmine has an 85 chance of winning top award in english and a 4 out of 5
Nicotine in cigarettes. To determine whether the mean nicotine content of a brand of cigarettes is greater than the advertised value of 1.4 milligrams, a health advocacy group tests
Historical records indicate the mean depth at this location for the previous 10 years is 78.4 feet. Is there any evidence to suggest this population mean has changed?
keep your eyes and ears open as you read or listen to the news this week. finddiscover an example of statistics in the
A 95% confidence interval for the proportion of all adults who bought a lottery ticket in the past year is (assume Gallup used an SRS)
In problem, construct a 99% confidence interval for the difference between the average cost of repairing a broken leg and the average cost of repairing.
U.S. legislation known as HIPAA (Health Insurance Portability and Accountability Act of 1996) protects the privacy of patient medical data.
A wide sense stationary stochastic process X(t) with autocorrelation function RX (τ ) = e-4|τ | is the input to a linear time-invariant filter with impulse response
suppose two different states each pick a two-digit lottery number between 00 and 99 for a 100 possible numbers. what is
Find the probability that a randomly chosen adult is obese, given that he or she suffers from diabetes. Round your answer to 2 decimal places. Find the probability that a randomly chosen adult who is obese also suffers from diabetes. Round your a..
When the machine is either out of control or down, a repair person must be called. What is the probability that a repair person must be called right now?
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