APPLIED STAT.IN BUS.+ECONOMICS
APPLIED STAT.IN BUS.+ECONOMICS
6th Edition
ISBN: 9781259957598
Author: DOANE
Publisher: RENT MCG
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Chapter 16.6, Problem 11SE

Consumers are asked to rate the attractiveness of four potential dashboard surface textures on an interval scale (1 = least attractive, 10 = most attractive). Use MegaStat or another software package to perform a Friedman test to see whether the median ratings of surfaces differ at α = .05, using age as the blocking factor.

Chapter 16.6, Problem 11SE, Consumers are asked to rate the attractiveness of four potential dashboard surface textures on an

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Please show me your solutions and interpretations. Show the completehypothesis-testing procedure.A manufacturing company produces bearings. One line of bearings is specified to be 1.64 centimeters (cm) in diameter. A major customer requires that the variance of the bearings be no more than 0.001 cm2. The producer is required to test the bearings before they are shipped, and so the diameters of 16 bearings are measured with a precise instrument, resulting in the following values:1.69 1.62 1.63 1.70 1.66 1.63 1.65 1.71 1.64 1.69 1.57 1.64 1.59 1.66 1.63 1.65Assume bearing diameters are normally distributed. Use the data and α = 0.025 to test the data to determine whether the population of these bearings is to be rejected because of too high variance.
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