There is a theory that music increases productivity of workers. The new vice president for manufacturing operations, however, believes that music can distract the workers’ concentration. To prove his point, he requested the operations manager to conduct an experiment for one week and find out if music indeed has an effect on workers’ productivity. Two groups of assembly line workers were randomly assigned to the three music conditions (without music, and with light instrumental). Furthermore, the average productivity of workers during the week prior to the experiment was obtained as baseline data. The following data were reported. Test the null hypothesis that productivity is the same for employees who listen to music and those who do not. Test also the null hypothesis that there is no difference in the productivity of individual workers before and after listening to music while at work. Test both null hypotheses at α = .05.
There is a theory that music increases productivity of workers. The new vice president for
manufacturing operations, however, believes that music can distract the workers’
concentration. To prove his point, he requested the operations manager to conduct an
experiment for one week and find out if music indeed has an effect on workers’ productivity.
Two groups of assembly line workers were randomly assigned to the three music conditions
(without music, and with light instrumental). Furthermore, the average productivity of
workers during the week prior to the experiment was obtained as baseline data. The
following data were reported. Test the null hypothesis that productivity is the same for
employees who listen to music and those who do not. Test also the null hypothesis that
there is no difference in the productivity of individual workers before and after listening to
music while at work. Test both null hypotheses at α = .05.
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