The time until the first arrival into a bank after it opens is an exponential random...
The time until the first arrival into a bank after it opens is an exponential random variable with standard deviation equal to 2 minutes. What is the probability that the time to the first arrival is equal to 1 minute? If your answer is non-integer, answer to four decimal places using conventional rounding methods.
Homework Answers
X is a continuous random variable since time is measured.
you must know m, the decay parameter.
m = 1/2 = 0.5
f(x) = 0.5e–0.5x where x is at least zero and m = 0.5.
, f(1) = 0.5e−(0.5)(1) = 0.8243
probability that the time to the first arrival is equal to 1 minute is 0.8243
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