Question

Assume the duration of interviews at the Australian embassy follows an exponential random variable with a mean of 720 seconds. (Hint: Check at the back of your Introstat notes, p320, for the mean and variance of the exponential distribution.) What is the probability that a forthcoming interview lasts more than 9 minutes? 

          Assume the duration of interviews at the Australian embassy follows an exponential random variable with a mean of 720 seconds. (Hint: Check at the back of your Introstat notes, p320, for the mean and variance of the exponential distribution.) What is the probability that a forthcoming interview lasts more than 9 minutes?
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Elementary Statistics a Step by Step Approach
Elementary Statistics a Step by Step Approach
Allan G. Bluman 9th Edition
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Assume the duration of interviews at the Australian embassy follows an exponential random variable with a mean of 720 seconds. (Hint: Check at the back of your Introstat notes, p320, for the mean and variance of the exponential distribution.) What is the probability that a forthcoming interview lasts more than 9 minutes?
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Transcript

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00:02 Given p of false alarm that is equal to 1 % that is equal to 0 .01.
00:13 By the property probability the sum of all probabilities is equal to 1.
00:48 So that is sigma p is equal to 1...
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