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The newly elected city mayor of Gulfsville decides to construct a new levee system near the major river in the town. The estimated life of such a structure will be 40 years. Total initial costs (consulting fees and construction) would be $800,000. Maintenance cost would be $30,000 every 5 years. How much money should the city borrow now in order to carry out the entire project including maintenance? The interest rate is 5%. Illustrate your answer with a cash flow diagram.
A Department of Trasporta repot about air travel found that nationwide, 76% of all flights are on time. What is the probablity that you will have have excatly 80 flights on time?
Use a 0.05 significance level to test the claim that the heights of female supermodels vary less than the heights of women in general. The standard deviation of heights of the population of women is 2.5 in.
Bolts are randomly selected until a 5 mm bolt is obtained. The outcomes are the sequences of bolts that can be selected. So one outcome is 1, and the other is 342. List the equally likely outcomes.
It is conjectured that the maximum number of Tybars that could be sustained on the planet is 312,500. How many years from the date of introduction of the herd will it take for the number of Tybars to reach that number?
A standard deck of 52 cards is shuffled thoroughly and n cards are turned up. What is the probability that a face card turns up? For what value of n is the probability about .5?
If we use the Empirical Rule, sales will be between what two values on 68 percent of the days? Sales will be between what two values on 95 percent of the days?
The Wall Street Journal recently ran an article indicating differences in perception of sexual harrassment on the job between men and women.
A) Predict the final score if the person obtains a third exam score of 68. B) Calculate the standard error of the estimate.
Find the percentage of area under a normal curve between the mean and the given number of standard deviations from the mean.
Over the past 20 days (20 shipments), four have been rejected & returned back to company A. Determine if there is a problem with the parts at company A.
classified ads in newspaper offered for sale 19 used cars of the same make and model. the output of regreesion analysis
The design tolerance thickness for an automotive part is 55 mm to 65 mm. If the process mean thickness is 61 with a standard deviation of 2.3 mm, then what percentage of the sheets will be acceptable? (i.e. What percentage will fall within the des..
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