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A trucking company has determined that on an annual basis the distance travelled per truck is normally distributed with a mean of 50.0 thousand kilometres and a standard deviation of 12.0 thousand kilometres.
(a) What is the probability that a randomly-selected truck travels between 30 and 60 thousand kilometres in one year.
What are the odds against drawing a card from an ordinary deck of cards and getting a spade?
Why then does it matter whether we assume straight-line or MACRS depreciation when we assess project NPV?
To be 99% sure that we will not be late in completing the project, what is the requested completion time in work-days?
Let X bar be the average of n such independent measurements. Use Chebychev's inequality to estimate how large n should be such that P(|X bar - M |
How many business majors would be required to evaluate mean salary to within 10 with 95% confidence if population standard deviation is %200.
To test the hypothesis that students who finish an exam first get better grades, the Professor kep track of the order in which papers were handed in.
Can you conclude that the information in the article is untrue? Use the 0.05 significance level. Determine the p-value and explain its meaning.
Determine the standard error of students that favoured the move.
Develop a trend line for the demand for fertilizer using computer software. Data collected on the yearly demand for 50 pound bags of fertilizer at Wallace Garden Supply are shown in the following table:
She then selects a sample of 102 football players and finds that their average math SAT is 460. Use alpha =.01 to perform the appropriate hypothesis test.
Shown below are rental and leasing revenue ?gures for of?ce machinery and equipment in the United States over a seven-year period according to the U.S. Census Bureau. Use these data to run a linear regression and then forecast the rental and leasi..
Test hypothesis that two processes have identical fractions nonconforming. Use a = 0.05. Create 90% confidence interval on difference in fraction nonconforming between two processes.
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