(20 points) Question 3 : Do animals distinguish colors?? One exper-

iment is designed to investigate whether snakes can distinguish colors by being attracted to the end of a narrow solid, where it divides to three different easy-to-open coloured doors. Observations are taken for n = 120 snakes. Do snakes have a preference for one on the

three different coloured doors? Use = 0.01.

Green Red Blue Observed Count (Oi) 39

()

24 ()

57 ()