The overall distance traveled by a golf ball is tested by hitting the ball with Iron Byron, a mechanical golfer with a swing that is said emulate the legendary champion, Byron Nelson. Ten randomly selected balls of two different brands are tested and the overall distance measured. The data follow: Brand 1: 275, 286, 245, 271, 283, 271, 279,275, 263, 267 Brand 2: 258, 244, 260, 265, 273, 281, 271, 270, 263, 268 (a) Use the Wilcoxon rank-sum test to investigate if the mean distances differ. Use a = 0.05. Ho (b) Use the normal approximation for the Wilcoxon rank-sum test with a = 0.05. Find the approximate P-value for this test, and what is your conclusion? P-value - . Round your answer to 3 decimal places. Ho

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Types of Bias

Statistics is the study of data collection, organization, analysis, interpretation, and presentation. Statistical bias is a characteristic of a statistical technique or its findings in which the expected value deviates from the actual root quantitative parameter being estimated. According to the actual definition of bias, it refers to the tendency of a statistic to overestimate or underestimate a parameter.