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A two-way frequency table is shown below that displays the relationship between age and preferred vacation destination. We took a sample of 100 people and recorded the following results:
 

                      Disney World            Las Vegas           Alaska Cruise        Total

10–25 years        23                            4                       3                             30

26–40 years        8                               21                    5                             34

41–55 years       11                            12                    13                            36

Total                   42                             37                  21                              100



What is the probability (rounded to the nearest whole percent) that a randomly selected person is 41 to 55 years old or prefers vacationing in Disney World?

 78%

 67%

 26%

 11%

 

I was going off of estimation... not sure where to start.

failurewithasmile  Apr 15, 2017
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P( 41-55  or Disney World)  = P(41-55)  + P(Disney World)  - P(41-55 and Disney World)

 

P( 41-55  or Disney World)  =   .36         +       .42                  -         .11    

 

 =    .67   =  67%

 

 

 

cool cool cool

CPhill  Apr 15, 2017

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