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An economic study is being made on the design of a small bridge. The traffic load has been studied with the following loads and occurrences noted during the last 5 years. Use a Poisson model for the occurrence of large loads.
In the first design under consideration, if a load T-1 occurs, a contribution to cumulative fatigue damage is expected that implies an eventual loss of useful life worth $500 to the state. Vehicle T-2 will involve an average damage of $100 each occurrence, while damage under T-3 "costs" $0.50 per occurrence. An alternate design costing more than the first design is being considered. This design is expected to have an average damage of $100 for each T-1 occurrence and no damage with the other vehicles. Determine the expected annual cost due to fatigue damage for each design. Use data-based distributions for each of the three Poisson-process parameters.
The mean volume of sales for a sample of 100 sales representatives is $25,350 per month. The sample standard deviation is $7,490.
You are trying to determine whether male and female Central Bank employees, having equal qualifications, receive different salaries. The data contain the salaries (in thousands of dollars) for 9 male and 9 female employees. Assume salaries are nor..
What percentage of success would you expect for these professional golfers if the putting distance was 10 feet?- Explain what the slope of 3.95 means in terms of how success changes with distance.
In a recent funding drive in support of classical radio, it was announced that 11.35% of the listeners actually donated to the radio station. A survey of 225 listeners found that 10.75% of the listeners had actually donated.
A particle source A emits one particle at a time, according to a Poisson process with an intensity of two particles a minute. Another particle source B emits two particles at a time, according to a Poisson process with an intensity of one pair of ..
At the .01 significance level can we conclude the mean age is more than 8.4 years for the cars of university students? What is the p-value?
Assume that the distribution is normal. Based on the Empirical Rule, how many students scored between 69 and 89?
A random sample of n=36 is taken resulting in a sample mean of 63 and s=9. conduct the appropriate hypothesis test and make a decision.
below you are given ages that were obtained by taking a random sample of 9 undergraduate students. assume the
What effect is being described here? What does this imply about the design of experiments with a goal of evaluating the effectiveness of a new medication?
Two independent event have probabilities 0.1 and 0.3 what is the probability that neither of the events occurs?
A cigarette manufacturer wants to test the claim that the variance of the nicotine content of its cigs. is 0.644 milligram. Assume that it is normally distributed.
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