Two different paste wax formulations are being compared to see if they hold up equally well in repeated washing at an automated car wash. On each of 10 test vehicles, formulas A and B are applied to opposite sides of the roof, and a coin flip is used in determining the side that receives formula A. The number of washings before water no longer “beads” on the surface is found to be as listed here. At the 0.05 level, can we conclude that the wax formulations are equally effective? Using the appropriate statistical table, what is the most accurate statement that can be made about the p-value for the test?
Answer to relevant QuestionsComparing the lifetimes of two brands of penlight batteries, a researcher has randomly selected 10 batteries of brand A and 10 of brand B, then subjected each battery to the same usage test. Given the lifetimes listed below ...Given the following randomly selected observations, use the Wilcoxon signed rank test and the 0.01 level of significance in examining whether the population median could be greater than 37.0. Using the appropriate ...Two investment counselors have evaluated the 15 major companies in an industry according to their potential as a “safe investment.” Both counselors agree that company C is the best firm in which to invest. These and the ...Five computer operators have been asked to rate four different workstation arrangements in terms of comfort with 1 = very uncomfortable to 10 = very comfortable. Their ratings are in file XR14084. At the 0.05 level, could ...For the top law firms in the world in terms of profit per equity partner, data file XR15012 lists the number of equity partners and the gross revenue ($ millions) for the most recent fiscal year. Given these data, determine ...
Post your question