Why don’t we pool sample data when we are constructing a confidence interval estimate of p1 – p2?
Answer to relevant QuestionsA restaurant is interested in whether there is difference in the tendency to drink beer, wine, and other alcoholic drinks, by gender. A survey of a random sample of customers who bought alcoholic beverages revealed the data ...Construct a 90% confidence interval estimate of the difference in proportion of peanuts in the mixed-nuts packages described in the previous exercises. Do you expect this confidence interval to contain zero? Why or why not? 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 ...The R2 for the data on sales and promotional spending for Smith and Klein Manufacturing is 0.83, which is a relatively high value. Does this mean that the least squares regression line is a good model in this case? Check that the requirements for the theoretical model are met for the data from the Hendrick Software Sales Company. Are there any outliers? Are there any influential observations?
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