6. Suppose a stop light has a red light that lasts for 100 seconds, a green light that lasts for 40 seconds and a yellow

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6. Suppose a stop light has a red light that lasts for 100 seconds, a green light that lasts for 40 seconds and a yellow

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6 Suppose A Stop Light Has A Red Light That Lasts For 100 Seconds A Green Light That Lasts For 40 Seconds And A Yellow 1
6 Suppose A Stop Light Has A Red Light That Lasts For 100 Seconds A Green Light That Lasts For 40 Seconds And A Yellow 1 (21.63 KiB) Viewed 25 times
6. Suppose a stop light has a red light that lasts for 100 seconds, a green light that lasts for 40 seconds and a yellow light that lasts for 5 seconds. When you first observe the stop light, it is red. Let X denote the time until the light turns green a. What type of random variable would be used to model X? What is its mean? b. Find the probability that you wait more than 10 seconds for the light to turn green. c. Find the probability that you wait between 20 and 40 seconds for the light to turn green.
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