You are the manager of a production company. The production manager comes to you with the idea to change an old laser machine in your plant with a new one, and he claims that the new one will increase the performance of the production process. You asked him to record the cutting time in seconds for each item with the new and the old machine. The production manager reported the following results in seconds for one cut: New machine Old machine 42.1 41.3 42.4 43.2 41.8 42.7 43.8 42.5 43.1 44.0 41.0 41.8 42.8 42.3 42.7 43.6 43.3 43.5 41.7 44.1 a) Construct the 95% confidence intervals for the differences of the means. b) Do you believe that the new machine increased the performance of the company and do you plan to allow the production manager to buy the new machine

Sean has placed a job ad and is now interviewing potential employees. which of the following questions is he legally allowed to ask during the interview? do you have any disabilities that will require special accommodation? how many children do you have? where did you earn your degree and how has it prepared you for this position? is this your maiden name that you have listed on the job application?

The amberssen specialty company is a chain of twelve retail stores that sell a variety of imported gift items, gourmet chocolates, cheeses, and wines in the toronto area. amberssen has an is staff of three people who have created a simple but effective information system of networked point-of-sale registers at the stores and a centralized accounting system at the company head- quarters. harry hilman, the head of amberssens is group, has just received the following memo from bill amberssen, sales director (and son of amberssen’s founder). harry—it’s time amberssen specialty launched itself on the internet. many of our competitors are already there, selling to customers without the expense of a retail storefront, and we should be there too. i project that we could double or triple our annual revenues by selling our products on the internet. i’d like to have this ready by - giving, in time for the prime holiday gift-shopping season. bill after pondering this memo for several days, harry scheduled a meeting with bill so that he could clarify bill’s vision of this venture. using the standard con- tent of a system request as your guide, prepare a list of questions that harry needs to have answered about this project.

4. the condition requires that only one of the selected criteria be true for a record to be displayed.