PLEASE ANSWER ALL. WILL RATE The presence of predators has been hypothesized to

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PLEASE ANSWER ALL. WILL RATE

The presence of predators has been hypothesized to induce changes in prey behavior though chemical cues, even in the absence of direct interaction. Consider the graph below comparing activity levels of grey tree frog tadpoles, Hyla versicolor, reared either in the presence or absence of caged predators (dragonfly larvae, Anax longipes) in experimental ponds. Activity was quantified as the percentage of moving tadpoles observed over a 10-minute interval. Mean SE; n-30 tadpoles per experimental pond, F1, 10-6.12, P-0.033.

Explanation / Answer

This type of statistical test is called t-test

The height of each bare represents E) the avarage percentage of experimental pond with or without predators.

The dependent variable is- D) pery activity level.

The independent variable is C) both A and B

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