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Consider the bone mineral density data of Figure 5.6
(a) Fit a cubic smooth spline to the relative change in spinal BMD, as a function of age. Use cross-validation to estimate the optimal amount of smoothing. Construct pointwise 90% confidence bands for the underlying function.
(b) Compute the posterior mean and covariance for the true function via (8.28), and compare the posterior bands to those obtained in (a).
(c) Compute 100 bootstrap replicates of the fitted curves, as in the bottom left panel of Figure 8.2. Compare the results to those obtained in (a) and (b).
Compute the inflation rate for each year 1989-2006 and determine which were years of inflation. In which years did deflation occur In which years did disinflation occur Was there hyperinflation in any year
Q= -3 + 8.5L - 2L^2 Q is toys per hour, L is workers employed per hour. Charges $20 per toy. Workers paid $10 hour. Firm has $50 fixed costs per hour. What is marginal product labor (MPL) What is marginal revenue product
On graph paper, plot the Cookie Monster's total utility and marginal utility. Due to the difference in the order of magnitude, make them two separate graphs. In each case, put cookies on the horizontal axis and utility on the vertical.
Suppose worker productivity increased at the rate of 1.9% per year. If the labor force grew by 1.5% per year, what rate of increase in RGDP would be sustainable without increasing inflation pressures
Assume that 10 percent of capital depreciates each year. What gross saving rate is necessary to make the given capital-labor ratio the steady-state capital-labor ratio (Hint: In a steady state with no population growth or technological change.
Under Plan A, Mr. Huan will sell the house at a price of 700,000 yuan with probability 85%, sell at a price of 760,000 with probability 10%, and sell at a price of 670,000 with probability 5%.
Develop a theory or hypothesis about some economic relationship - draw conclusions to support your theory. Include at least six (6) references (no more than three years old) from material outside the text(s).
Price index = (cost of market basket today / cost of marketbasket in base year) * 100 Nominal rate of interest = 7% Expected inflation rate = 5% Real rate of interest = 2%
Explain difference between profit maximization and shareholder wealth maximization and determine which of these is a more comprehensive statement of a firm's economic objectives?
Suppose that a risk-free investment will make three future payments of $100 in one year, $100 in two years, and $100 in three years. If the Federal reserve has set the risk-free interest rate at 8 percent.
Suppose the yield on a 30-year corporate bond rated Aaa is 9.50 percent and the yield on a 30-year Treasury bond is 9.00 percent.What is the default risk premium Would you expect a higher or lower default risk premium on an A-rated bond
A country has a growth rate of 5%, a labor growth rate of 7%, and a net investment growing at 5%. The production function is Cobb-Douglas with CRS and a capital share of 1/3. Determine the growth rate of technology.
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