Question

Based on an analysis of sample data, an article proposed the pdf

f(x) = 0.65e^{−0.65(x − 1)}

when

x ≥ 1

as a model for the distribution of

X = time (sec)

spent at the median line. (Round your answers to three decimal places.)

(a) What is the probability that waiting time is at most 3 sec? More than 3 sec?

at most 3 sec		P(X ≤ 3)	=
more than 3 sec		P(X > 3)	=

(b) What is the probability that waiting time is between 3 and 6 sec?

Answer 1