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Mental measurements of young children are often made by giving them blocks and telling them to...

Mental measurements of young children are often made by giving them blocks and telling them to build a tower as tall as possible. One experiment of block building was repeated a month later, with the times (in seconds) and five pairs of children’ completion times are listed below. Test the claim that there is a difference in times between two trials. (a) At α = 5%, use the Classical approach to conclude it. (b) Using the P-value approach to conclude it.

1st Trial (A) 33 28 29 26 29

2nd Trial (B)30 25 24 24 29 .

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