Sir Joma frequently says "So..." whenever he gives lectures during class,averaging 20 times within an hour. What is the probability it will take at least9 minutes before Sir Joma says his second "So..." ?

Assuming that the time between "So.."s follows an exponential distribution with a mean of 3 minutes…

Answered: Sir Joma frequently says "So..."…

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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Sir Joma frequently says "So..." whenever he gives lectures during class, averaging 20 times within an hour. What is the probability it will take at least 9 minutes before Sir Joma says his second "So..." ?