Small-business telephone users were surveyed 6 months after access to carriers other than AT&T became available for wide-area telephone service. Of a random sample of 368 users, 92 said they were attempting to learn more about their options, as did 37 of an independent random sample of 116 users of alternative carriers. Test, at the 5% significance level against a two-sided alternative, the null hypothesis that the two population proportions are the same.
Answer to relevant QuestionsEmployees of a building materials chain facing a shutdown were surveyed on a prospective employee ownership plan. Some employees pledged $10,000 to this plan, putting up $800 immediately, while others indicated that they did ...Test the hypothesis H0: σ2x = σ2y H1: σ2x > σ2y using the following data. a. s2x = 125, ny = 45; s2y = 51, ny = 41 b. s2x = 125, ny = 45; s2y = 235, ny = 44 c. s2x = 134, ny = 48; s2y = 51, ny = 41 d. s2x = 88, ny = 39; ...In a study comparing banks in Germany and Great Britain, a sample of 145 matched pairs of banks was formed. Each pair contained one bank from Germany and one from Great Britain. The pairings were made in such a way that the ...Of a random sample of 148 accounting majors, 75 rated a sense of humor as a very important trait to their career performance. This same view was held by 81 of an independent random sample of 178 finance majors. a. Test, at ...The president of Amalgamated Retailers International, Samiha Peterson, has asked for your assistance in studying the market penetration for the company's new cell phone. You are asked to study two markets and determine if ...
Post your question