In a research study conducted to assess how companies view their long term economic prospects, representatives from 50 large companies, 100 midsized companies, and 200 small companies were contacted and interviewed. In the sample of large companies, 38 (76%) said that the company’s long term economic prospects were good, while 68 (68%) of the midsized companies in the sample reported that long term prospects for the company were good, and 142 (71%) of the small companies in the sample reported that long term prospects for the company were good. Use the chi square test of proportion differences to test the hypothesis that the proportion of companies who would report good long term economic prospects is the same for all three size classifications. Use a significance level of 5%.
Answer to relevant QuestionsHernandez Cast Parts wants to compare the performance of four machine operators in the manufacturing section of the company, using a sample of 200 units produced by each operator. The number of defective units was as ...In a study entitled “Social Focus on Urban Rural Scotland, “results of a sample survey of Scottish adults in various regions of the country were reported. In one of the survey questions, respondents were asked to ...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 ...JetBlue Airways sponsored a survey of 834 Long Beach, California, voters to measure general community support for building new facilities at Long Beach Airport. Participants were asked, “Do you support replacing temporary ...In a survey of 500 randomly selected high school teachers and 1000 randomly selected grade school teachers, 160 (32%) of the high school teachers and 260 (26%) of the grade school teachers cited lack of classroom discipline ...
Post your question