Union members in a large firm work in three departments: assembly, maintenance, and shipping/ receiving. Twenty of a random sample of 30 assembly workers say they intend to ratify the new contract negotiated by union leaders and management. This compares to 30 of 40 maintenance workers and 25 of 50 shipping/ receiving workers who say they will ratify the contract. At the 0.025 level of significance, test the null hypothesis that the population proportions are the same for all three departments.
Answer to relevant QuestionsFor df = 10 and the constants A and B, identify the values of A and B such that the tail areas are equal and a. P (A < x2 < B) = 0.80 b. P (A < x2 < B) = 0.90 c. P (A < x2 < B) = 0.95 d. P (A < x2 < B) = 0.98 The data in file XR13084 represent the Scholastic Aptitude Test (SAT) scores for a random sample of 200 high school seniors who have taken the exam. Using the 0.025 level of significance, test whether the sample scores could ...Part I: Respondent Characteristics and the Area Judged Best for Bargains 1. Construct and use the 0.05 level in testing the contingency table for variables 26 and 17. Can we conclude that the gender of the respondent is ...A researcher studying the purchase habits of eight married couples has found they spent the amounts shown below for clothing. At the 0.05 level, can we conclude that the population of husbands and wives do not spend equally ...A sample of five law firms has been selected from each of three major cities for the purpose of obtaining a quote for legal services on a relatively routine business contract. The quotes provided by the fifteen firms are as ...
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