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Joans Nursery specializes in custom-designed landscaping for residential areas. The estimated labor cost associated with a particular landscaping proposal is based on the number of plantings of trees, shrubs, and so on to be used for the project. For cost-estimating purposes, managers use two hours of labor time for the planting of a medium-sized tree. Actual times from a sample of 10 plantings during the past month follow (times in hours).1.7, 1.5, 2.6, 2.2, 2.4, 2.3, 2.6, 3.0, 1.4, 2.3With a .05 level of significance, test to see whether the mean tree-planting time differs from two hours.
a. State the null and alternative hypotheses.
b. Compute the sample mean.
c. Compute the sample standard deviation.
d. What is the p-value?
e. What is your conclusion?
Suppose the demand for guitars in State College is given by Qd = 9000 - 12P where Qd is the quantity demanded, and P is the price of guitars. Also, suppose the supply of guitars is
An investor has a series of three $15,000 payments expected to be realized at the end of years three, four, and five. Calculate the present value P at time zero and the correspondi
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Why do we still have problem of "unemployment" ? How could we solve the problem? Which one is better fixed or flexible exchange rate of unemployment ?
constructing a opportunity set and budget line for $15 lottery ticket and intending on buying a candy bar for $0.75 and peanut bag for $1.50
What are the crisis affect the economies This crisis would affect the UK in 3 major ways. First the UK would be unable to sell its exports to these economies if they are hea
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