The following are the numbers of sales which a random sample of ten salesmen of industrial chamicals in Area A and a random sample of seven salesmen of industrial chemicals in Area B made over a fixed period of time: Assume that the population variance of two events are not equal and unknown. Compute the margin of error using the level of significance α = 0.10. Area A 41 46 60 35 58 65 39 59 52 40 Area B 35 65 57 48 20 39 36

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