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A purchaser of electronic components wants to test the hypothesis that they last less than 100 h. To do this she takes a random sample of 16 such components and ?nds that, on average, they last 96 h, with a standard deviation of 8 h. If the purchaser knows that the lifetime of the components is normally distributed, should she accept the hypothesis that they last less than 100 h at ( a ) A 95% level of con?dence? ( b ) A 99% level of con?dence?
In the past, 20% of applicants for admission into a master's program had GRE scores above 650. Of the 88 students applying to be admitted into the program in 1981, 22 had GRE scores above 650. Do the 1981 applicants have greater GRE scores than previous applicants at the 5% level of signi?cance?
U(Y, l) = Y^1/2 l^1/2, where Y= income, l= leisure hours, w= wage rate, price of Y =$1, NL is non-wage income and T is the maximum number of hours available. Let ‘t' be the tax rate on the hourly wage rate, so the effective wage rate is w(1-t) = w..
A recent internal study revealed that this client's demand for your software is Q^d = 100 - 0.1P and that it would cost you $500 per unit to install and maintain software at this client's site. the profit that results from charging this client a si..
If 12 percent of thoes solar energy resources could be harnessed , how long would it take for an average 50 square meter solar array to fill up a car with the energu equivalent of 15 gallon thank of fasoline
Overheard at water cooler: My regression model of demand is better than one that the consultant prepared for us because it has a higher R2.
Explain each of primary methods used for setting value, describing its applications, strengths and weaknesses, show the formula and compute an example for each method.
A small company heats its building and spends $8,000 per year on natural gas for this purpose. Cost increases of natural gas are expected to be 10% per year starting one year from now (i.e., the first cash flow is $8,800 at EOY one).
The return on quality can be defined as the profit increase divided by the cost of the quality improvement program.
Most restaurant customers tip according to a percentage rule - between 15 and 25 percent of the bill. Diners who have dinner and a $20 bottle of wine usually pay the same percentage of the bottle price as diners who order a $100 bottle.
What is your fixed cost of doing business
The comparative advantage for pizza production belongs to __________ and the comparative advantage for pizza delivery belongs to __________. Based on their comparative advantages, Pat should specialize in _______ while Corey should specialize in ____..
Briefly explain the economic logic behind Grunfeld's model and the expected signs of the coefficients in (1). Run OLS on the pooled data. Explain the possible problem(s) with the regression from part b.
Your own in-house staff will be responsible for integration and quality control. Because the software and the PBC are contract items, you must carefully monitor the integration phase.
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