Question: E 19 Listen ' D Consider a scenario in which we want to determine whether the chances of infection for some worms is independent of

E 19 Listen ' D Consider a scenario in which we want to determine whether the chances of infection for some worms is independent of which area they live in. Worms are collected from three areas and the data is as shown: Area 1 Area 2 Area 3 Infected 1 5 20 20 Not infected 5 40 20 You will be asked: (a, 2 pts) What is the expected number of infected worms in area 1? (b, 5 pts) What is the chi-squared value for a test of homogeneity? (c, 3 pts) What conclusion can you make based on this chi-squared value? (provide answers to a and b to the closest 0.001)

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