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There are 1733 machinery rebuilding and repairing companies in the United States. A tool manufacturer wishes to survey a simple random sample of these firms to find out what proportion of them are interested in a new tool design.
If the tool manufacturer would like to be 95% confident that the sample proportion is within 0.01 of the actual population proportion, how many machinery rebuilding and repairing companies should be included in the sample?
What are the assumptions of regression analysis and how do you evaluate them?
pharmaceutical companies advertise for the birth control pill an annual efficacy of 99.1 in preventing pregnancy.
Suppose we want to modify the differentiation program so that it works with ordinary mathematical notation, in which + and * are infix rather than prefix operators.
spasmodic dysphonia sd is an idiopathic chronic and disabling voice disorder. in a case-control study 150 cases of sd
What is the probability that the chosen manager will be either a woman or over 50 years old or both? Solve both directly from the data and by using the law of unions. What is the probability that the chosen manager will be under 30?
The net profit of an investment is normally distributed with a mean of $10,000 and a standard deviation of $5,000. The probability that the investor's net profit will be between $12,000 and $15,000 is _____________.
the laurier companys brand has a market share of 30. suppose that 1000 consumers of the product are asked in a survey
Fit a least squares line to the data.- Plot the data and graph the least squares line as a check on your calculations.
M°ans waits for the bus. The waiting time, T , until a bus comes is U (0, a)- distributed. While he waits he tries to get a ride from cars that pass by according to a Poisson process with intensity λ. The probability of a passing car ..
The U.S. Fish and Wildlife Service plans to study the kinds of fish being taken out of Saginaw Bay.- What kind of design have they used?- What could go wrong with the design that they have proposed?
Discuss using a 5dB exchange exchange rate versus a 3dB exchange rate in protecting workers hearing. Make a case for the use of either the 90dBA PEL and 5dB exchange rate or the 85dB REL and a 3dB exchange rate?
What results in your departments seem to be correlated or related (either causal or not) to other activities? How could you verify this? What are the managerial implications of a correlation between these variables?
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