A survey of 1000 television viewers conducted by a local television station produced the following data:  40% watch the news at 12 00 60% watch the news at 18 00 50% watch the news at 23 00 25% watch the news at 12 00 and 18 00 20% watch the news at 12 00 and 23 00 20% watch the news at 18 00 and 23 00  10% watch all three news broadcasts   what percent view the news at 12 00 and 18 00, but not 23 00?

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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A survey of 1000 television viewers conducted by a local television station produced the following data: 

  • 40% watch the news at 12 00
  • 60% watch the news at 18 00
  • 50% watch the news at 23 00
  • 25% watch the news at 12 00 and 18 00
  • 20% watch the news at 12 00 and 23 00
  • 20% watch the news at 18 00 and 23 00 
  • 10% watch all three news broadcasts

 

what percent view the news at 12 00 and 18 00, but not 23 00?

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