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1. In a sample of 400 ball bearings, the correlation coefficient between eccentricity and smoothness was r = 0.10.
a. Find the P-value for testing H0 : ρ ≤ 0 versus H1 : ρ> 0. Can you conclude that ρ> 0?
b. Does the result in part (a) allow you to conclude that there is a strong correlation between eccentricity andsmoothness? Explain.
2. The article " ‘Little Ice Age' Proxy Glacier Mall Balance Records Reconstructed from Tree Rings in the Mt. Wadding- ton Area, British Columbia Coast Mountains, Canada" (S. Larocque and D. Smith, The Holocene, 2005:748-757) evaluates the use of tree ring widths to estimate changes in the masses of glaciers. For the Sentinel glacier, the net mass balance (change in mass between the end of one summer and the end of the next summer) was measured for 23 years. During the same time period, the tree-ring index for white bark pine trees was measured, and the sample correlation between net mass balance and tree ring index was r = -0.509. Can you conclude that the population correlation ρ differs from 0?
Now, suppose the output quantity of interest is Vout. Assuming RF is very large, compute the closed-loop gain and I/O impedances of the circuit.
Eliminate the Mango Market? Draw a supplydemand graph depicting a situation in which banning mango imports drives the quantity of mangos sold to zero.
advanced analysis given the following diagrams q1 12 bags. q2 7 bags. q3 19 bags. the market equilibrium price point
This would cover years 4 and 5, after the manufacturer's warranty has expired. Suppose that the expected repair costs for years 4 and 5 are $850 per year. If your discount rate is 5.5% per year, should you purchase the extended warranty.
Does anyone know what I need to do when he says "cumulative over 2years" and when he says to calculate the inflation from Oct 08 withthe corresponding month of base period
Derive a redistribution scheme for decentralizing the entire set of Pareto optimal allocations.
a. Draw the demand and supply curves, before and after the tax. b. What will be the CS, PS, tax revenues and deadweight loss c. Suppose the government increases the tax to $4 per unit. What will be the new CS, PS, tax revenues and deadweight loss.
Industry A is composed of five large firms and 100 small firms. The market shares of the five largest firms are, respectively, 30, 25, 20, 15, and 10. The 100 small firms together have the remaining market share. Calculate the Herfindahl-Hirshman ..
supposing that cars are capital intensive relative to shoes, which country will have comparative advantage in the production of cars? Of shoes? Explain.
A good stock-based mutual fund should earn at least 10% per year over a long period of time. Consider the case of Barney and Lynn, who were overheard gloating (for all to hear) about how well they had done with their mutual fund investment.
Illustrate, graphically, the effects of a fiscal expansion when capital is mobile and both prices and exchange rates are fixed. Over what horizon is the assumption of fixed prices a valid one? Explain.
if real GDP in 2002 were $10,048.8 billion and nominal GDP in 2002 were $10,049.6 billion calculate the percentage change from 2001 to 2002 in nominal GDP, real GDP and price level. What is the value of the GDP deflator in 2002
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