Two random samples, one of 95 blue-collar workers and a second of 50 white-collar workers, were taken from a large company. These workers were asked about their views on a certain company issue. The following table gives the results of the survey.
Using a 2.5% significance level, test the null hypothesis that the distributions of opinions are homogeneous for the two groups of workers.
Answer to relevant QuestionsDetermine the value of x2 for 14 degrees of freedom and an area of .10 in the left tail of the chisquare distribution curve. A sample of 30 observations selected from a normally distributed population produced a sample variance of 5.8. a. Write the null and alternative hypotheses to test whether the population variance is different from 6.0. b. ...According to a report in the Wall Street Journal (online.wsj.com/mdc/public/page/2_3022 auto sales. html), the distribution of all auto sales by segment (type of vehicle) in the United States during November 2011 was as ...In the National Survey on Drug Use and Health, one of the questions asked is about illicit drug use by Americans age 18 to 25 years (www.samhsa.gov/data/NSDUH/2k10NSDUH/2k10Results.htm#Fig2-7). On the assumption that the ...Refer to Exercise 11.63a. Test at a 1% significance level if the population variance is greater than 4.2. n = 10, s2 = 7.2
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