This is from an experiment with n = 15 children in each of four groups, Fill in the missing values 2

This is from an experiment with n = 15 children in each of four groups, Fill in the missing values 2 Paints/Blank, A researcher is comparing the effectiveness of two sets of instructions for assembling a child's bike. The researcher measures how much time is needed for each father to assemble the bike. Is there a significant difference in time for the two sets of instructions? Test with alpha = 0.5, two – tailed test

 

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