An engineer is studying early morning traffic patterns at a particular intersection. The observation period begins at 5:30 AM. Let X denote the time of arrival of first vehicle from north-south direction. Let Y denote the first arrival time from east- west direction. Time is measured in fraction of an hour after 5:30 AM. Assume the density for (X,Y) is given by fx,r(x, y) = { 0 0.25).

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter2: Equations And Inequalities
Section2.7: More On Inequalities
Problem 44E
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An engineer is studying early morning traffic patterns at a particular intersection.
The observation period begins at 5:30 AM. Let X denote the time of arrival of first
vehicle from north-south direction. Let Y denote the first arrival time from east-
west direction. Time is measured in fraction of an hour after 5:30 AM. Assume the
density for (X,Y) is given by
! 0< y< x <1
fx.y(T, y) = { 6 otherwise.
Find P(Y < 0.25) and P(X < 0.5|Y > 0.25).
Transcribed Image Text:An engineer is studying early morning traffic patterns at a particular intersection. The observation period begins at 5:30 AM. Let X denote the time of arrival of first vehicle from north-south direction. Let Y denote the first arrival time from east- west direction. Time is measured in fraction of an hour after 5:30 AM. Assume the density for (X,Y) is given by ! 0< y< x <1 fx.y(T, y) = { 6 otherwise. Find P(Y < 0.25) and P(X < 0.5|Y > 0.25).
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