Question: Example 7: Subway trains on a certain line run every half hour between mid-night and six in the morning. What is the probability that a

Example 7: Subway trains on a certain line run every half

Example 7: Subway trains on a certain line run every half hour between mid-night and six in the morning. What is the probability that a man entering the station at a random time during this period will have to wait: At least 20 minutes? (ii At most 25 minutes? (iii) Between 25 to 30 minutes? Also compute the mean and variance of the above distribution and comments on your results

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