The 10 economic forecasters of a random sample were asked to forecast the rate of growth of

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The 10 economic forecasters of a random sample were asked to forecast the rate of growth of the real gross national product (GNP) for the coming year. Suppose the probability distribution of the r.v.-forecast-is normal.
a. The probability is 0.10 that the sample variance of the forecast is more than X percent of the population variance. What is the value of X?
b. If the probability is 0.95 so that the sample variance is between X and y per-cent of the population variance, what will be the values of X and Y?
Distribution
The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most...
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Essentials of Econometrics

ISBN: 978-0073375847

4th edition

Authors: Damodar Gujarati, Dawn Porter

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