In: Statistics and Probability
On average, commuters in Phoenix, Arizona, area require
m= 40.0 minutes to get to work. Assume that...
On average, commuters in Phoenix, Arizona, area require
m= 40.0 minutes to get to work. Assume that for
all commuters the times to get to work are normally
distributed with the standard deviation of s= 10
minutes. Joe is an average Phoenix resident and goes to
work every day.
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- What is the probability that on any given day it will take Joe
over 45 minutes to get to work?
-
- What is the probability that it will take Joe
exactly 40.0 minutes to get to work on
any given day?
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- Joe has just left home to attend a meeting with the CEO in 30
minutes. If the CEO routinely fires employees who are
tardy for meetings, what is the probability that Joe will still be
employed tomorrow?
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- Joe is so punctual, that he leaves home for work at exactly
same time. His work starts at 8:00 AM
sharp. Due to traffic jams during morning rush hours Joe
historically was tardy for work on 38.2% of days. What
time does Joe leave home for work every morning? Briefly
explain your train of thoughts in arriving to the answer.