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MTR Corporation has to conduct surveys regularly to evaluate its service quality. According to previous studies, 78% of the passengers refuse to take part in
MTR Corporation has to conduct surveys regularly to evaluate its service quality. According to previous studies, 78% of the passengersrefuseto take part in such surveys.
(a)If 15 passengers are selected randomly, what is the probability that at least 2 of them willrespondto the survey?(5 marks)
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