Maurice Tutor

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Teaching Since: May 2017
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Education

  • MCS,PHD
    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

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  • Professor
    Phoniex University
    Oct-2001 - Nov-2016

Category > Management Posted 24 Oct 2017 My Price 4.00

unbelted driver

Seatbelts II. Police estimate that 80% of drivers now wear their seatbelts. They set up a safety roadblock, stopping cars to check for seatbelt use.

 

a) How many cars do they expect to stop before finding a driver whose seatbelt is not buckled?

b) What’s the probability that the first unbelted driver is in the sixth car stopped?

c) What’s the probability that the first 10 drivers are all wearing their seatbelts?

d) If they stop 30 cars during the first hour, find the mean and standard deviation of the number of drivers expected to be wearing seatbelts.

e) If they stop 120 cars during this safety check, what’s the probability they find at least 20 drivers not wearing their seatbelts?

 

Answers

Maurice Tutor
(5)
Status NEW Posted 24 Oct 2017 07:10 PM My Price 4.00

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