Colleges work hard to convert offers of admission into acceptances. One college has been experimenting with phone calls from program faculty to prospective students to encourage students to accept offers of admission. In a random sample of 278 students who were called by program faculty, 234 sent acceptances. In a random sample of 302 students who were not called but received a package in the mail, 232 sent acceptances. Is there evidence that the pro portion of prospective students who send acceptances is higher when they get calls from program faculty? Use α = 2.5%.
Answer to relevant QuestionsThe Hendrick Software Sales Company has collected data on the number of contacts made by its sales staff, and the software sales, for a random sample of months. Create an appropriate scatter diagram for these data. What is ...Interpret the coefficient of determination for the data set from the Hendrick Software Sales Company. Given this number, can you conclude that the way to increase sales is to increase the number of sales contacts made by the ...If appropriate, create a 99% prediction interval for the total revenue of a global research company with 10,000 employees. Check the requirements for regression for the data set of the TSX and the DJI described in Exercise 8.Is this data set a random sample? What is the relationship between revenue and profit? A random sample of the top 1,000 Canadian companies was selected, and revenue and profit for 2008 were recorded.6 Create a scatter diagram, and comment on the ...
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