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Name the sampling strategy in each. 

style="color:rgb(0,0,0);" class="ql-font-serif">a.Randomly select three trees from each horizontal row. __________________ 

b.Lay out a grid on a map of the hill. Randomly select eight __________________ squares from the grid, and checkall trees in those squares.

 c.Randomly pick a number from 1 to 30. Start at the tree at that __________________ position in the first row, then go to every 30th tree after that. 

d.Check the ten trees closest to the parking lot where the botanist __________________ Parks her car. 

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