Mathematics, 05.05.2020 00:05, rhlalbin

Mental measurements of children are often made by giving them
blocks and asking them to build a tower as tall as possible. One experiment was repeated one month later with the same children and the times are listed in the table below. Is there sufficient evidence to support the claim that there is a difference between the two times? Test the claim at the .05 = level of significance.

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Mental measurements of children are often made by giving them
blocks and asking them to build...