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INTHIN www.th The time taken to travel school ABC by a student is modelled by a normal distribution with mean 39 minutes and standard deviation

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INTHIN www.th The time taken to travel school ABC by a student is modelled by a normal distribution with mean 39 minutes and standard deviation 12 minutes. Find the probability that a randomly chosen student travels between 25 minutes to 35 minutes to school ABC. Fifteen percent of all students travel more than x minutes to school ABC. Find x. N Find the probability that a randomly chosen student travels at least 1 hour given that he/she travels more than x minutes to school ABC

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