The Wilcoxon Signed-Ranks Test Can Be Used to Test the Claim

question 16

Essay

The Wilcoxon signed-ranks test can be used to test the claim that a sample comes from a population with a specified median. The procedure used is the same as the one described in this section except that the differences are obtained by subtracting the value of the hypothesized median from each value. The sample data below represent the weights (in pounds)of 12 women aged 20-30. Use a Wilcoxon signed-ranks test to test the claim that the median weight of women aged 20-30 is equal to 130 pounds. Use a significance level of 0.05. Be sure to state the hypotheses, the value of the test statistic, the critical values, and your conclusion. $$\begin{array} { l l l l l l } 140 & 116 & 125 & 120 & 153 & 140 \\111 & 127 & 133 & 137 & 132 & 160\end{array}$$

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Definitions:

Agreeable

A personality trait characterized by kindness, cooperativeness, warmth, and consideration of others.

Extraverted

A personality trait characterized by outgoingness, high energy, and a preference for social interaction and external stimulation.

Mum Effect

The reluctance to communicate unfavorable information or feedback due to the fear of the negative consequences that may result, leading to a lack of communication or withholding of important information.

Mum Effect

The reluctance to communicate unfavorable news or feedback, often to avoid discomfort or conflict.