Question: Consider the following n 5 12 signed ranks (Ri ) calculated from the difference scores (Di ) from two related samples: Signed ranks (Ri ):

Consider the following n′ 5 12 signed ranks (Ri

) calculated from the difference scores (Di

) from two related samples:

Signed ranks (Ri

): +5, +6.5, +4, +11, −8, +2.5, −2.5,

+1, +12, +6.5, +10, +9 What is the value of the test statistic W if you are testing H0: MD ⩽ 0?

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