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If one is trying to make industry by industry predictions, HO models will be misspecied if they omit TFP dierences even if TFP is uncorrelated with factor intensity. However, if one is trying to identify coecients such as those that occur in Rybczynski regressions, this will be a valid exercise if TFP is uncorrelated with factor intensity but not if TFP is correlated with factor intensity. Although I nd that TFP is uncorrelated with factor intensity in my sample, the obvious caveat applies that such a (zero) correlation is ultimately an empirical question that depends on the data set. [1] Acemoglu, Daron, (1998) Why do New Technologies Complement Skills?
Evaluate the difference in the mean ratings and find the standard deviation of the difference in the ratings, what is the chance both children are boys?
This table gives three measurements of 10 samples made in a production run. Use statistical process control method to solve problem.
Multiple regression analysis produced following regression equation: Y' = 427.2 - 4.58X1 - 14.83X2 + 6.10X3. Which statement is right based on this analysis?
The number of cases of merlot wine sold by a Paso Robles winery in an 8-year period follows:
The mean noise level for 24 hospital operating rooms was 56.3 dBA and the standard deviation was 7.5 dBA. At α = .05 can it be concluded that there is a difference in means?
A consumer is contemplating the purchase of a new compact disc player. A consumer magazine reports data on the major brands. Brand A has lifetime (TA) which is exponentially distributed with m=.02; and Brand B has lifetime
Girls are needed to ensure that a 95% confidence interval estimate for the differncein mean BMI between boys and girls has a margin of error not exceeding 2 units?
When studying simultaneous responses to two categorical questions, we should set up a a) contingency table. b) frequency distribution.
What is the probability that a shopper will spend more than 25 minutes in a store? If 200 shoppers enter a store, how many shoppers would you expect to stay in the store for more than 25 minutes?
Assume that both samples are independant simple random samples from populations having normal distributions.
Recent crime reports indicate that 5.2 motor vehicle thefts occur each minute in the United States. Assume that the distribution of thefts per minute can be approximated by the Poisson probability distribution.
The diameters of peaches in a certain orchard are normally distributed with a mean of 5.10 inches and a standard deviation of 0.40 inches.
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