In order to determine whether the median distance for the X-Special golf ball exceeds the median distance for the best-selling golf ball, six golfers were selected and asked to hit each ball with their driver. The distance was recorded. The following data were observed. 
Based on these data, and testing at an alpha = 0.025 level, the critical value for the Wilcoxon Matched Pairs Signed Rank test is 2.
Definitions:
Pitch
The perceived frequency of a sound, determining how high or low it seems.
Hertz
The unit of frequency in the International System of Units (SI), defined as one cycle per second.
Loudness
A perceptual attribute of sounds that indicates the intensity or volume, as perceived by the ear.
Decibels
A unit used to measure the intensity of sound, with higher decibels indicating louder sounds.
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