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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 data set of ordered pairs with a negative linear correlation has a coefficient of determination of 85.2%. What is the linear correlation coefficient?
Find the power of the test designed to determine if the the new safety equipment is effective when the mean percent reduction is actually 2.3%. Assume that the population standard deviation is 12% and that α is 0.02. What is the power?
What is the minimum sample size needed in order for you to be 95% confident that your estimate is within 5 of µ? Use the value 20 for the population standard deviation of scores on this subsection.
find the test statistic for the following proportion a collection of 500 randomly selected teachers revealed that 61
Before deciding, the decision maker considers listening to the weather forecast on the radio. Draw an influence diagram that takes into account the weather forecast.
We want to test a hypothesis at the .01 level of significance. Based on your computations, would we reject or fail to reject the null hypothesis?
A new process for producing synthetic diamonds can be operated at a profitable level only if the average weight of the diamonds produced by the process is greater than 0.5 karat.
a professor gives tests that are either hard medium or easy. if she gives a hard test her next test will be either
Which of the following research situations is most likely to use a repeated-measures design?
the covariance between the returns of a and b is -0.112. thenbsp istandard deviation of the rates of returns 0.26 for
an article gave the accompanying data on ultimate load kn for two different types of beams. assuming the underlying
a) What percent of all costs and expenses were cost of revenues in 2005? In 2006? b) What percent of all costs and expenses were due to re- search and development in 2005? In 2006? c) Have general administrative costs grown as a percentage of all cos..
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