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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?
Using a short-run Phillips Curve, illustrate the change in inflation and unemployment resulting from the increase in profit expectations.
Compute the following probabilities a) If Y is distributed N(1,4) find Pr(y ? 3) b) If Y is distributed N(3,9) find pr(y>0) c) If Y is distributed N (50,25) find pr(40?Y?5
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In the keynesian cross model, assume the consuption function is given by C=200=.75(Y-T) and planned investment=100, government purchases and taxes are each of them 100. a) Draw a g
Use a graphical illustration to describe briefly what the influence of each of the following would be on the market supply of labor:(a) an increase in immigration (b) more women en
If a supply curve goes through the point P = $10 and Qs = 320, then a. $10 is the highest price that will induce firms to supply 320 units b. $10 is the lowest price that wil
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