Econ 6050 Case Assignment

Econ 6050 Assignment #3 Question #1 Once we come the income samples from each major(ip), we issue that the average earned by those graduates who majored in economics is $30,206 epoch the average earned by those graduates who majored in marketing is $27,196. In looking at lone(prenominal) the mean of the samples, it seems that those who major in economics will earn more(prenominal), but we should as well as account if this is only out-of-pocket to a sampling error. In examination the data, we can set up the following supposition: allow Ho: Mecon = Mmkt ? D = Mecon Mmkt = 0 Ha: Mecon ? Mmkt ? D = Mecon Mmkt ? 0 After testing, we close out the data because the discrimination is too bang-up to be due to sampling error. We scupper that in that location is a 95% vista that the authoritative difference in the mean is between 2141 and 3881. This room that those who major in economics in contrast to marketing atomic number 18 more likely to make more bullion on average. Question #2 In red gum (a suburb of St. Louis), African-Americans were not happy with the metropolis because they believed that they were not slightly delineated among teachers in the city. African-Americans make up 5.7% of the population in the city. However, out of the 405 teachers in the cultivate remains sample, they were represented by 15 teachers, which is only about 3.7%.

To properly test whether African-Americans ar underrepresented, the following speculation can be formed: permit Ho: coincidence of African-Americans teaching method in school ashes = Proportion of African- Americans in the city Ha: Proporti! on of African-Americans teaching in school system ? Proportion of African-Americans in the city We will not decide to dissent our null hypothesis after testing these hypotheses because the difference is not too great to be due to sampling error. This shows that the African-Americans are not underrepresented in the school system. It is also discovered that there is a 95% chance that the actual percentage of African-Americans represented in the school system lies...If you want to get a full essay, influence it on our website: OrderCustomPaper.com

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