27. The market research team of the Look Forward Company requires some household data from four different cities. The team has to perform this job in two days-the next Saturday and Sunday. It plans to spend half a day in each of the cities. The relevant data are given as follows:

How should the team plan its visit to the four cities so that the expected response may be maximised?
State this expected response.

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Day and time Probability of a household contact City 1 City 2 City 3 City 4 Saturday Morning 0.32 0.85 0.16 0.64 Saturday Evening 0.60 0.56 0.95 0.80 Sunday Morning 0.70 0.35 0.40 0.62 Sunday Evening 0.10 0.72 0.64 0.90 Number of households 150 100 200 200 expected to interview