The Labor Department recently released a report on job changing patterns in the US. Included in the report were results from a survey of 1000 workers from each of four job classifications. In the sample of 1000 restaurant workers, 260 said they had changed jobs within the past year. In the sample of 1000 construction workers, the number who reported changing jobs was 300. For the remaining two samples— office workers and sales staff— the numbers were 290 and 350, respectively. Test the hypothesis that the proportion of workers who would report changing jobs in the last year is the same for all four populations. Use a significance level of 5%.
Answer to relevant QuestionsFor the following cases, indicate whether we’re dealing with time series data or cross-sectional data. Data a. Responses to a survey conducted on May 30 of this year b. Diameters of 25 units sampled at 3 o’clock today ...In a study of college athletes, the NCAA received anonymous responses from a random sample of 300 football players, 200 basketball players, and 100 baseball players. Asked whether they had used any banned performance ...Last year, 35% of people who downloaded a free “app “(application) for their mobile electronics device deleted the downloaded app within 6 months of the download. Acme games recently conducted a survey of 200 randomly ...A random sample of 100 baseballs has been selected from each of two large crates of baseballs. One crate of baseballs was produced by Allen Sports Products; the other was produced by Baron Athletic Supply. Ten of the ...Scores for a sample of 350 job applicants taking an aptitude test are summarized in the table below: The average test score for the sample was 65. The standard deviation was 15. Conduct an appropriate chi square goodness of ...
Post your question