A study of factory workers examined how productivity was influenced by music being played on the factory floor among experienced workers and new workers. The results are shown in the graph below. Use the graph to identify what pattern of results was found. (A) A main effect of employee expereience only B A main effect of music only (C) An interaction of music and employee experience only. (D) An interaction of employee experience and music as well as a a main effect of employee experience level. (E) An interaction of employee experience and music as well as a a main effect of music. F An interaction of employee experience and music as well as a a main effect of music and a main effect of exmployee experience level.
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Experienced) and "Music" (No Music vs. Music). - The dependent variable is "Productivity." Show more…
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In order to determine the effect of music on productivity in a toy firm, the manager divided the 100 workers into two equal groups. The first group was put in one section of the shop and was allowed to listen to taped music while working, while the other group was put in another section, without music. The total output for each group was recorded daily for one week, after which the averages and standard deviations were computed. The group of workers who listened to music had an average of 320 units and with a standard deviation of 10 units. The other group had an average of 312 units with a standard deviation of 16 units. Can the manager conclude that music increases the productivity of workers at 0.05 level of significance? at 0.01 level of significance? Show the curve for the rejection region and the null and alternative hypothesis.
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