Engineers at a computer production plant tested two methods for accuracy in drilling holes into a PC board. They tested how fast they could set the drilling machine by running 10 boards at each of two different speeds. To assess the results, they measured the distance (in inches) from the center of a target on the board to the center of the hole. The data and summary statistics are shown in the table.
Write a report summarizing the findings of the experiment. Include appropriate visual and verbal displays of the distributions, and make a recommendation to the engineers if they are most interested in the accuracy of the method.
Answer to relevant QuestionsFor the data in Exercise 2: a) Would you expect the mean purchase to be smaller than, bigger than, or about the same size as the median? Explain. b) Find the mean purchase. c) Find the median purchase. The discounts negotiated by the car buyers in Exercise 32 are classified by whether the buyer was Male 1code = 02 or Female 1code = 12. Compare the discounts of men vs. women using an appropriate display and write a brief ...The data set provided contains the aver-age tuition of private four-year colleges and universities as well as the average 2007–2008 tuitions for each state. The mean tuition charged by a public two-year college was $2763, ...For the data in Exercise 1: a) Find the quartiles using your calculator. b) Find the quartiles using Tukey’s method. c) Find the IQR using the quartiles from part b. d) Find the standard deviation. For the bookstore of Exercise 1, the manager wants to predict Sales from Number of Sales People Working. a) Find the slope estimate, b1. b) What does it mean, in this context? c) Find the intercept, b0. d) What does it mean, ...
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