a) Suppose that Luke flies with Spirit Airlines, which posts a flight time of 2 hours and 5 minutes (that is, 125 minutes) for this route. What is the chance that his flight will be at most 5 minutes late? Hint: what is P(X < 130)? b) Let the flight duration be a random variable. Find the expected value and standard deviation of this variable.

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Suppose that the flight time from Chicago O'Hare International Airport to Hartsfield-
Jackson Atlanta International Airport follows a uniform distribution with lower and
upper bounds of 120 and 140 minutes, respectively.
a) Suppose that Luke flies with Spirit Airlines, which posts a flight time of 2 hours
and 5 minutes (that is, 125 minutes) for this route. What is the chance that his
flight will be at most 5 minutes late? Hint: what is P(X < 130)?
b) Let the flight duration be a random variable. Find the expected value and
standard deviation of this variable.
Transcribed Image Text:Suppose that the flight time from Chicago O'Hare International Airport to Hartsfield- Jackson Atlanta International Airport follows a uniform distribution with lower and upper bounds of 120 and 140 minutes, respectively. a) Suppose that Luke flies with Spirit Airlines, which posts a flight time of 2 hours and 5 minutes (that is, 125 minutes) for this route. What is the chance that his flight will be at most 5 minutes late? Hint: what is P(X < 130)? b) Let the flight duration be a random variable. Find the expected value and standard deviation of this variable.
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