8% D 2% T denote and Bastr

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
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The time it takes to drive from Austin to
Bastrop depends on the route taken:
Probability of
Travel time|Route
Route
Taking Route
(in minutes)
90%
Normal(u = 60, o = 5)
HWY 71
MLK
8%
Uniform[55, 75]
95 to 270
2%
Exponential(mean= 65)
Let T denote the travel time between
Austin and Bastrop. Determine Var[T].
1. Less than 80 minutes.
2. At least 110, but less than 120 minutes.
3. At least 80, but less than 100 minutes.
4. At least 120 minutes.
5. At least 100, but less than 110 minutes.
Transcribed Image Text:The time it takes to drive from Austin to Bastrop depends on the route taken: Probability of Travel time|Route Route Taking Route (in minutes) 90% Normal(u = 60, o = 5) HWY 71 MLK 8% Uniform[55, 75] 95 to 270 2% Exponential(mean= 65) Let T denote the travel time between Austin and Bastrop. Determine Var[T]. 1. Less than 80 minutes. 2. At least 110, but less than 120 minutes. 3. At least 80, but less than 100 minutes. 4. At least 120 minutes. 5. At least 100, but less than 110 minutes.
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