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Eighty percent of illegally parked cars in large city get tickets. A sample of 100 illegally parked cars is taken

a) Determine the expected percentage of tickets issued to these 100 cars?

b) Determine the variance for percentage of tickets?

c) Determine the probability that 75% or more cars get ticketed

d) Determine the probability that the percentage of tickets issued is between 68% and 82%?

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