Question:

The presence of harmful insects in farm fields is detected by erecting boards covered with a sticky material and then examining the insects trapped on the board. To investigate which colors are most attractive to cereal leaf beetles, researchers placed six boards of each of four colors in a field of oats in July. The table below gives data on the number of cereal leaf beetles trapped:

Lemon yellow White Green Blue

45 21 37 16

59 12 32 11

48 14 15 20

46 17 25 21

38 13 39 14

47 17 41 7

At the .05 significance level, can we conclude there is a difference in the mean of the four colors? ANOVA

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