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1. A regression analysis was carried out to determine whether wages increase for blue-collar workers depending on the extent to which ?rms that employ them engage in product exportation. The sample consisted of 585,692 German blue-collar workers. For each of these workers, the income was known as well as the percentage of the work that was related to exportation. The regression slope estimate was 0.009, and the t-statistic value was 1.51.8 Carefully interpret and explain these ?ndings.
2. An article in Financial Analysts Journal discusses results of a regression analysis of average price per share P on the independent variable X/k, where X/k is the contemporaneous earnings per share divided by ?rm-speci?c discount rate. The regression was run using a random sample of 213 ?rms listed in the ValueLine Investment Survey. The reported results are P = 16.67 + 0.68X /k (12.03) where the number in parentheses is the standard error. Is there a linear relationship between the two variables?
Use a bag of M&M TM candies and perform an examploe Chi-squared analysis based on your random sampling(s). State a hypothesis and a few reasons why it along with your Chi-squared analysis may be different from someone else's findings.
The average cost per night of a hotel room in New York City is $273 (SmartMoney, March 2009). Assume this estimate is based on a sample of 45 hotels and that the sample standard deviation is $65.
What are the null and alternative hypothesis for this? What is a type II error in context of this test? Suppose that the researcher deceides not to reject the null hypothesis what sort of error might he be making?
Normal 0 false false false EN-US X-NONE X-NONE State the multiple regression ..
a recent report indicated an average family of four 2 parents and 2 children under the age of 16 spends 500 per month
Standard deviation of 424 and 155 respectively. at the .05 level of significance, test the claim that the new version has standard deviation equal to that of the past version.
Do you think the Poisson distribution, which assumes independent arrivals, is a good estimation of arrival rates in the following queuing systems? Defend your position in each case.
If the confidence interval limits do not include age below 20 does it mean that motor cyclists under the age of 20 rarely die in crashes?
Show that for any metric space S, if A ⊂ S and x ∈ A\ A, then there is a bounded, continuous real-valued function on A which cannot be extended to a function continuous on A∪{x }. Hint: f (t ) := sin(1/t ) for t > 0 cannot be extended continuously..
individuals filing federal income tax returns prior to march 31 received an average refund of 1056. consifer the
the weights of bags of candy are normally distributed with a mean of 28 ounces and a standard deviation of .28 ounce.
for the xy data below computea r and determine if it is significantly different from zerob the slope of the regression
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