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 1.
 
 
 

A web server hosting company advertises 99.999 percent guaranteed network uptime.

 
(a)

How many independent network servers would be needed if each has 99 percent reliability? (Round  your answer to the nearest whole number.)

  
  Network servers[removed]  

(b)

How many independent network servers would be needed if each has 90 percent reliability? (Round  your answer to the nearest whole number.)

  
  Network servers[removed]  

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The probability is 1 in 4,003,000 that a single auto trip in the United States will result in a fatality. Over a lifetime, an average U.S. driver takes 49,000 trips.

 
 2.
 
 
Required information
 
(a)

What is the probability of a fatal accident over a lifetime? (Hint: Assume independence.) (Round your answer to 4 decimal places.)

  
  Probability[removed]  

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