s mean on the s mean do you t Use the fact e point x y sx 10 This mean students l do less well age 124 you 5 59 Beavers and

Question

s mean on the s mean do you t Use the fact e point x y sx 10 This mean students l do less well age 124 you 5 59 Beavers and beetles Do beavers benefit beetles Re 4step searchers laid out 23 circular plots each 4 meters in diameter in an area where beavers were cutting down cottonwood trees In each plot they counted the num ber of stumps from trees cut by beavers and the number of clusters of beetle larvae Ecologists think that the new sprouts from stumps are more tender than other cottonwood growth so that beetles prefer them If so more stumps should produce more beetle larvae Here are the data 26 BEAVERS 2 2 1 10 30 12 Stumps 2 Beetle larvae 25 Stumps Beetle larvae 1 2 8 21 3 3 4 24 36 40 2 14 1 16 3 43 1 4 1 2 1 6 54 9 13 14 2 5 5 1 11 27 27 56 1 3 18 40 4 50

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