The Sign test or Wilcoxon Signed-Rank test are nonparametric tests that can be used to compare two dependent samples when the assumptions for a t-test are invalid.
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Q110: Which one of the following is not
Q111: Twenty students are given an attitude test
Q112: A car dealer was interested in comparing
Q113: In testing the hypotheses Q114: Given the statistics: T+ = 520, T- Q116: The sign test is always to be Q117: The sign test is employed to compare Q118: The sign test is a nonparametric procedure Q119: Which of the following correctly describes the Q120: In testing the hypotheses 
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