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A probability density function shows the probability for each value of X. _The variance of X must be non-negative; the variance of Y must be non-negative; hence the covariance of X and Y must be non-negative _If X is a uniformly distributed random variable, the sum of all values of f(x) over the range [a, b] must equal one.
In the economy of Wrexington in 2008, consumption was one-half of gdp, government purchases were $2000 more than investment, investment was one-sixth of gdp, and the value of imports exceeded the value of exports by $500.
cascade pharamacreuticals company developed the following regression model, using time-series data from the past 33 quaters, for for one of its nonprescription cold remedies: y=-1.04 + 0.24X1 - 0.27X2 Where Y = quarterly sales (in thousands pf cas..
Coefficients Standard Error t Stat P-value Lower 95% Upper 95% Lower 95.0% Upper 95.0% Intercept 123034.4703 23311.13897 5.277926165 0.000358709 71094.01589 174974.9248 71094.01589 174974.9248 y 0.238078372 0.017797354 13.37717818 1.04516E-07 0.19842..
the general price inflation in our economy, the purchasing power of the dollar shrinks with the passage of time. If the average general inflation rate is expected to be 7% per year for the foreseeable future, how many years will it take for the do..
Suppose Jean Splicer, an investor, buys $100,000 of shares of stock in a diversified bundle of Bio-tech firms and exactly one year later sells those shares for $108,000. If the value of the CPI at the date of Jean's purchase was 160, and rose by t..
Josh Ritchey has just been hired as a cost engineer by a large airlines company. Josh's first idea is to quit giving complimentary cocktails, wine, and beer to the international flying public. He calculates this will save 5,000,000 drinks per year..
The demand in the cake market is Qd =500 - 10p and unrestricted supply is Qs = 100 + 10p. Suppose the government imposes a baker's license that reduces cake supply to Q¢s =10p. Calculate the numerical values of the following:a. Price that cons..
There is a belief that a person's performance on the GMAT (entrance exam to get into graduate school) can be predicted by their undergraduate GPA. Based on regression analysis what are the following values, (Round to three decimal places; put it ..
Suppose that firm A merges with firm F. What now will be the concentration ratio in the industry Suppose that after they merge, firms A and F go out of business. What now will be the concentration ratio in this industry
] A perfectly competitive firm faces a market price of $10 for its output X. It own two plants, A and B whose total costs are TC sub A = 10 + 2X + (.25X)2, TC sub B = 15 + .4X + (.1X)2, How many units should each plant produce to maximize profit at t..
You are the manager of a large automobile dealership who wants to learn more about the effectiveness of various discounts offered to customers over the past 14 months. Following are the average negotiated prices for each month and quantities sold ..
What is the cost function, marginal cost function, and average cost function for each plant? b) What is the efficient scale and minimum average cost for each plant? c) What is the cost function for the firm?
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