8.18 Calculate the margin of error for each of the following: a. nx = 300 pn x

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8.18 Calculate the margin of error for each of the following:

a. nx = 300 pn x = 0.62 ny = 350 pn y = 0.72

b. nx = 100 pn x = 0.44 ny = 120 pn y = 0.55

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