The Significance Level for a Wilcoxon Signed Rank Test for Matched

question 137

Multiple Choice

The significance level for a Wilcoxon signed rank test for matched pairs is 0.05.The alternative hypothesis is H₁: m_d > 0.The appropriate critical value for n = 20 nonzero differences is:

• A) 158
• B) 149
• C) 61
• D) 52
• E) 112

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Definitions:

Holt-Winters

A forecasting method that addresses seasonality by applying exponential smoothing to both the level and the trend of the data.

Qualitative Methods

Research techniques that collect data that is not in numerical form such as interviews, observations, and textual analysis.

Judgmental Forecasting

A forecasting method that relies on intuitive judgments, opinions, and subjective estimates rather than on rigorous mathematical models.