Sixth question of the practice exam
I don't understand why if the frequency with which the family cars pass is equal to 3 then the mean is 1/3. Why is it that the sum of the passing cars is not simply the sum of the frequencies?
check out the video "exponential Distribution" in section 5 of the course, That helped me understand the expected value for exponential distribution is 1/landa.
so the sum of exponential distributions' expected values would be 1/3 + 1/8.